fix(git-sync): wrap action buttons on narrow panels or long labels

flex-wrap: wrap lets buttons reflow to a second line instead of
overflowing. flex: 1 1 auto keeps them proportional within each row.
white-space: nowrap prevents individual button labels from breaking.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

services/web/frontend/stylesheets/components/integrations-panel.scss

@@ -125,7 +125,13 @@
 
   .git-sync-widget-actions {
     display: flex;
+    flex-wrap: wrap;
     gap: var(--spacing-02);
     margin-top: var(--spacing-02);
+
+    .btn {
+      flex: 1 1 auto;
+      white-space: nowrap;
+    }
   }
 }