Show buffer_search on vim::MoveToNextMatch (#11836)

This changes the vim::MoveToNextMatch event callback to open the
buffer_search toolbar. This fixes an issue where highlights would appear
which were only cancellable by opening then closing the toolbar.

Release Notes:

- the buffer search toolbar now opens on vim::MoveToNextMatch fixing the
issue where highlights were not cancellable

---------

Co-authored-by: Conrad Irwin <conrad.irwin@gmail.com>

crates/vim/src/normal/search.rs

@@ -218,6 +218,9 @@ pub fn move_to_match_internal(
         pane.update(cx, |pane, cx| {
             if let Some(search_bar) = pane.toolbar().read(cx).item_of_type::<BufferSearchBar>() {
                 search_bar.update(cx, |search_bar, cx| {
+                    if !search_bar.has_active_match() || !search_bar.show(cx) {
+                        return;
+                    }
                     search_bar.select_match(direction, count, cx);
 
                     let new_selections = vim.editor_selections(cx);