Fixes '"Share" button is shown even for remote projects'.

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This PR maps additional text colors from the Zed1 themes to the Zed2
themes.

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This PR is a first pass at porting the Zed1 themes to Zed2.

For the initial release of Zed2 we'll be shipping just the themes that
existed in Zed1, ported to Zed2. The new themes that were previously
added just in Zed2 have been removed.

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1. Blocks (with their headers) and mouse listeners should be drawn
together otherwise either starts to loose mouse events.

2. Scrollbar should be above all to match zed1 look and avoid buffer
headers popping slightly to the right of the scrollbar.

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1. Blocks (with their headers) and mouse listeners should be drawn together otherwise either starts to loose mouse events.

2. Scrollbar should be above all to match zed1 look and avoid buffer headers popping slightly to the right of the scrollbar.

This PR extends the `theme_importer` with the overall structure required
to support importing themes from Zed1.

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The panic was caused by Cocoa synchronously invoking the
`selected_text_range` method on the registered input handler while we
already had a borrow of the app.

This pull request fixes this issue by showing the character palette on
the next tick of the loop (we've had this problem in other spots too and
used the same technique).

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This PR disambiguates the macOS class names used in GPUI2 from the ones
used in GPUI1.

Right now if you happen to end up with a copy of both `gpui` and `gpui2`
in the dependency tree you get an unhelpful `unwrap` error when we try
to build the class names.

By giving them different names we are able to get to our more helpful
error that informs you that both GPUI1 and GPUI2 are in the module tree.

We can change these names back once we do the big "un-2-ing".

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The panic was caused by Cocoa synchronously invoking the `selected_text_range`
method on the registered input handler while we already had a borrow of the
app.

This commit fixes this issue by showing the character palette on the next tick
of the loop (we've had this problem in other spots too and used the same technique).

This also switches to using `Pixels` instead of `f32` to store the panel
size everywhere.

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Update VCS menu to match Zed1.
<img width="444" alt="image"
src="https://github.com/zed-industries/zed/assets/24362066/6cb27510-f501-46bc-862f-1fb78006b77c">

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We were not using `flex` on the `PaneGroup`, which caused the bottom
dock to be unable to satisfy the desired resize value.

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We were not using `flex` on the `PaneGroup`, which caused the bottom
dock to be unable to satisfy the desired resize value.

This addresses a bug where popover menus in the titlebar were rendered
only after a 2nd click. The first click was creating the View which the
second one then rendered.
In addition to this, `PopoverMenu::menu` function argument can now
return an `Option<View<T>>` instead of `View<T>` as the creation of the
menu can fail (as it might in case of git popover).

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Now, if we receive a scroll event for an axis, but that axis can't be
scrolled (overflow != scroll), we will apply it to the opposite axis
instead if that axis supports scrolling.

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Now, if we receive a scroll event for an axis, but that axis can't be scrolled
(overflow != scroll), we will apply it to the opposite axis instead
if that axis supports scrolling.

We were emitting the wrong kind of event, which caused the workspace to
never remove the notification.

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We were emitting the wrong kind of event, which caused the workspace
to never remove the notification.

The project panel was actually working just fine, the problem was due to
`UniformList` not re-hydrating the element state's scroll offset when
being rendered again.

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The project panel was actually working just fine, the problem was due to
`UniformList` not re-hydrating the element state's scroll offset when
being rendered again.

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We were shifting all the positions while keeping the original string,
which caused problems later when combining highlighted ranges with
matched indices.

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We were shifting all the positions while keeping the original
string, which caused problems later when combining highlighted
ranges with matched indices.

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Co-Authored-By: Antonio Scandurra <antonio@zed.dev>

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Reverts zed-industries/zed#3761

There was a bug in the previous implementation of `BatchIterator` that
was being masked by how we were using the BSP tree. The bug caused us to
render primitives without honoring the `PrimitiveKind` implicit
ordering.

This was a bug in the previous implementation that was being masked by
how we were using BSP.

This PR adds vertical padding to the picker's empty state.

This matches the styles added in #3769.

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This PR indents contacts in the collab panel.

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This PR increases the indent step size for the collab panel.

This gives the channel list a clearer hierarchy for nested channels, as
well as help align the disclosures with the parent channel's icon.

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