Fix workspace sizing (#3617)

Marshall Bowers created 

This PR fixes the sizing of the workspace, specifically with regards to
the center pane.

This fixes the issue where the tab bar would get clipped when its width
exceeded the size of the screen.

<img width="1298" alt="Screenshot 2023-12-12 at 8 36 15 PM"
src="https://github.com/zed-industries/zed/assets/1486634/592d7c6d-6901-4bd4-b5e7-e30bcad67e21">

Release Notes:

- N/A

Change summary

crates/workspace2/src/workspace2.rs | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

Detailed changes

crates/workspace2/src/workspace2.rs 🔗 

@@ -3627,6 +3627,7 @@ impl Render for Workspace {
                     .flex_1()
                     .w_full()
                     .flex()
+                    .flex_col()
                     .overflow_hidden()
                     .border_t()
                     .border_b()
@@ -3667,7 +3668,6 @@ impl Render for Workspace {
                         div()
                             .flex()
                             .flex_row()
-                            .flex_1()
                             .h_full()
                             // Left Dock
                             .child(
@@ -3683,6 +3683,7 @@ impl Render for Workspace {
                                     .flex()
                                     .flex_col()
                                     .flex_1()
+                                    .overflow_hidden()
                                     .child(self.center.render(
                                         &self.project,
                                         &self.follower_states,