git_ui: Fix item heights in git panel (#25833)

- Fixes items slightly overlapping in the git panel
- Fixes commit button in the project diff not opening modal

Release Notes:

- N/A

---------

Co-authored-by: Nate Butler <iamnbutler@gmail.com>
Co-authored-by: Cole Miller <m@cole-miller.net>

crates/git_ui/src/project_diff.rs

@@ -10,7 +10,8 @@ use editor::{
 use feature_flags::FeatureFlagViewExt;
 use futures::StreamExt;
 use git::{
-    status::FileStatus, Commit, StageAll, StageAndNext, ToggleStaged, UnstageAll, UnstageAndNext,
+    status::FileStatus, ShowCommitEditor, StageAll, StageAndNext, ToggleStaged, UnstageAll,
+    UnstageAndNext,
 };
 use gpui::{
     actions, Action, AnyElement, AnyView, App, AppContext as _, AsyncWindowContext, Entity,
@@ -952,11 +953,11 @@ impl Render for ProjectDiffToolbar {
                             .disabled(!button_states.commit)
                             .tooltip(Tooltip::for_action_title_in(
                                 "Commit",
-                                &Commit,
+                                &ShowCommitEditor,
                                 &focus_handle,
                             ))
                             .on_click(cx.listener(|this, _, window, cx| {
-                                this.dispatch_action(&Commit, window, cx);
+                                this.dispatch_action(&ShowCommitEditor, window, cx);
                             })),
                     ),
             )