vim: Fix % motion edge case (#39620)

Update Vim's `%` motion to first attempt finding the exact matching
bracket/tag under the cursor, then fall back to the previous
nearest-enclosing logic if none is found. This prevents accidentally
jumping to nested pairs in languages like TSX and Svelte where `<>`,
`</>`, and `/>` are also treated as brackets.

Closes #39368 

Release Notes:

- Fixed an edge case with the `%` motion in vim, where the cursor could
end up in a closing HTML tag instead of the matching bracket

crates/vim/src/test/neovim_backed_test_context.rs

@@ -207,6 +207,26 @@ impl NeovimBackedTestContext {
         }
     }
 
+    pub async fn new_tsx(cx: &mut gpui::TestAppContext) -> NeovimBackedTestContext {
+        #[cfg(feature = "neovim")]
+        cx.executor().allow_parking();
+        let thread = thread::current();
+        let test_name = thread
+            .name()
+            .expect("thread is not named")
+            .split(':')
+            .next_back()
+            .unwrap()
+            .to_string();
+        Self {
+            cx: VimTestContext::new_tsx(cx).await,
+            neovim: NeovimConnection::new(test_name).await,
+
+            last_set_state: None,
+            recent_keystrokes: Default::default(),
+        }
+    }
+
     pub async fn set_shared_state(&mut self, marked_text: &str) {
         let mode = if marked_text.contains('»') {
             Mode::Visual

crates/vim/src/test/vim_test_context.rs

@@ -66,6 +66,28 @@ impl VimTestContext {
         )
     }
 
+    pub async fn new_tsx(cx: &mut gpui::TestAppContext) -> VimTestContext {
+        Self::init(cx);
+        Self::new_with_lsp(
+            EditorLspTestContext::new_tsx(
+                lsp::ServerCapabilities {
+                    completion_provider: Some(lsp::CompletionOptions {
+                        trigger_characters: Some(vec![".".to_string()]),
+                        ..Default::default()
+                    }),
+                    rename_provider: Some(lsp::OneOf::Right(lsp::RenameOptions {
+                        prepare_provider: Some(true),
+                        work_done_progress_options: Default::default(),
+                    })),
+                    ..Default::default()
+                },
+                cx,
+            )
+            .await,
+            true,
+        )
+    }
+
     pub fn init_keybindings(enabled: bool, cx: &mut App) {
         SettingsStore::update_global(cx, |store, cx| {
             store.update_user_settings(cx, |s| s.vim_mode = Some(enabled));