[APP-4260] Disable commit message editor during commit operation (#9235)

## Description
Disables the commit message editor while the async commit (and optional
push / create-PR chain) is in flight, so the user can't edit the message
text mid-operation.

Fixes APP-4260.

## Testing
Manually verified the editor is locked once "Confirm" is pressed and
stays locked through the async commit/push/PR flow.

## Agent Mode
- [x] Warp Agent Mode - This PR was created via Warp's AI Agent Mode

CHANGELOG-BUG-FIX: Disabled the commit message editor while a git commit
is being performed in the git operations dialog.


[Conversation](https://staging.warp.dev/conversation/11795cb8-3dcc-4bcd-90c9-53f974585fe6)

Co-Authored-By: Oz <oz-agent@warp.dev>

Co-authored-by: Oz <oz-agent@warp.dev>

Author: exzshao

app/src/code_review/git_dialog/commit.rs

@@ -26,8 +26,8 @@ use crate::{
         user_facing_git_error, GitDialog, GitDialogAction, GitDialogEvent, GitDialogMode,
     },
     editor::{
-        EditorOptions, EditorView, Event as EditorEvent, PropagateAndNoOpNavigationKeys,
-        TextOptions,
+        EditorOptions, EditorView, Event as EditorEvent, InteractionState,
+        PropagateAndNoOpNavigationKeys, TextOptions,
     },
     server::server_api::ServerApiProvider,
     ui_components::icons::Icon,
@@ -366,12 +366,18 @@ pub(super) fn start_confirm(me: &mut GitDialog, ctx: &mut ViewContext<GitDialog>
     let intent = state.intent;
     let include_unstaged = state.include_unstaged;
     let ai_autogen_enabled = should_send_git_ops_ai_request(ctx);
+    let message_editor = state.message_editor.clone();
     let repo_path = me.repo_path().clone();
     let branch_name = me.branch_name().to_string();
     let parent_branch = me.parent_branch_name.clone();
 
     me.set_loading(LOADING_LABEL, ctx);
 
+    // Lock the commit message editor while the async op is in flight.
+    message_editor.update(ctx, |editor, ctx| {
+        editor.set_interaction_state(InteractionState::Disabled, ctx);
+    });
+
     let code_review_ai = if ai_autogen_enabled {
         Some(ServerApiProvider::handle(ctx).read(ctx, |p, _| p.get_ai_client()))
     } else {