Fix expand icon overlapping with text in insights sidebar

Fixed: 466956224
Change-Id: I8a01113d2fa29ea9bfed69301e9298fb61fedb4d
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/7264649
Commit-Queue: Samiya Caur <[email protected]>
Reviewed-by: Alex Rudenko <[email protected]>

Author: samiyac

front_end/panels/timeline/components/sidebarInsightsTab.css

@@ -66,6 +66,8 @@
   }
 
   .dropdown-icon {
+    flex: none;
+
     &.active devtools-button {
       transform: rotate(90deg);
     }