Co-authored-by: Nathan <nathan@zed.dev>

- Ensure the candidate keybinding matches the correct context
- Fix context key matching
- I was soooo close
- Dispatch actions on focused node

[[PR Description]]

Release Notes:

- (Added|Fixed|Improved) ...
([#<public_issue_number_if_exists>](https://github.com/zed-industries/community/issues/<public_issue_number_if_exists>)).

Allows us to implement context menu matching nicely

This PR fixes an issue where an element with a cursor style set would
not update the cursor when hovering over it.

Previously the cursor style would only appear by interacting with the
element in some way, for instance, by clicking on the element or by
having a `.hover` with some other style being applied.

Release Notes:

- N/A

* You need to check all layers of the context stack
* When in command, the context should be based on where focus was (to
  match `available_actions`.

Release Notes:

- N/A

Previously we were using a function in `editor` to combine syntax
highlighting and fuzzy match positions, it would operate on the full
text as put into the label. However we now have a method `ranges` on
`StringMatch` itself which operates on just the match text.

The outline view has some pretty specific behavior around path/normal
matches and how they are highlighted. So let's just give the match the
full text before it leaves the search function so it can freely index

This PR adds support for copying diagnostics messages to the clipboard.

This was already working, but we were missing implementations
clipboard-related methods in the `TestPlatform` that were causing the
tests to fail when the copying functionality was added.

Release Notes:

- N/A

[[PR Description]]

This will get updated – I need to get the template derek used for the
new preview icon. Sorry for the jank in advance.

Release Notes:

- N/A

[[PR Description]]

Merge past diagnostic multibuffer style work + some extras

Release Notes:

- N/A

[[PR Description]]

- Add pane empty state
- Ensure tab bar doesn't resize when a tab is added
- Make ButtonLike respect the style of a disabled button
- Add additional cursors to gpui2

Release Notes:

- N/A

Co-Authored-By: Marshall Bowers <1486634+maxdeviant@users.noreply.github.com>

Co-Authored-By: Marshall Bowers <1486634+maxdeviant@users.noreply.github.com>

Co-Authored-By: Marshall Bowers <1486634+maxdeviant@users.noreply.github.com>

Co-Authored-By: Marshall Bowers <1486634+maxdeviant@users.noreply.github.com>

Co-Authored-By: Marshall Bowers <1486634+maxdeviant@users.noreply.github.com>

Co-Authored-By: Marshall Bowers <1486634+maxdeviant@users.noreply.github.com>

Fixes up tests for movement in editor/scrolling.

Co-authored-by: Antonio <antonio@zed.dev>

Co-Authored-By: Marshall Bowers <1486634+maxdeviant@users.noreply.github.com>

Fixes test test_copilot.

Co-authored-by: Antonio <antonio@zed.dev>

Co-authored-by: Antonio <antonio@zed.dev>

Fixes test test_edit_events.

Co-authored-by: Antonio <antonio@zed.dev>

It feels like every week or two someone hits this and is confused about
why the app isn't launch, been meaning to disable this in dev builds for
a while. This does mean that it'll be possible to hit the local DB lock
panic in a dev build if you run it multiple times but that is so rare
that it seems preferable

Release Notes:

- N/A

Co-authored-by: Antonio <antonio@zed.dev>

This reverts commit 0f7fc8c1a03eaec347df101ada66f28aefa3162a.

We've investigated another spurious failure, this time with test_multiple_excerpts_large_multibuffer; sadly it didn't really get us anywhere, so for now we're relaxing an assert.

Co-authored-by: Kirill <kirill@zed.dev>

Returned highlights were okay, but the test was trying to normalize the output by sorting the highlights by color. The ordering is different between gpui1 Color and gpui2 Hsla.

These tests failed due to an indefinite hang in buffer.condition in the following code:
\`\`\`rust
    let buffer = cx
        .add_model(|cx| Buffer::new(0, cx.model_id() as u64, text).with_language(language, cx));
    buffer.condition(cx, |buf, _| !buf.is_parsing()).await;
`\`\`
In both gpui1 and gpui2 \`.with_language\` spawns a task that notifies the context once it's done. The \`condition\` waits for notifications to be raised. The gist of the problem was that in gpui2, the spawned task was scheduled straight away, so we never really saw the notification with \`condition\`, causing us to wait indefinitely. This is probably a difference in test between schedulers in gpui1 and gpui2, but I kind of sidestepped the issue by spawning a condition before firing off a parsing task with \`set_language\`.

- +language_selector2
- Language Selector 2 working!
- Prevent languages showing in wrong order first
- copilot_menu2 (though only tested offling, which is insufficient)
- Dismiss tooltips at capture
- Get ChannelModal opening

[[PR Description]]

Release Notes:

-  N/A