style: Add ignores to fix coverage

Author: ChrisChV

src/course-outline/outline-sidebar/info-sidebar/UnitInfoSidebar.tsx

@@ -133,7 +133,7 @@ export const UnitSidebar = () => {
     if (navigator.clipboard) {
       // Modern approach: requires HTTPS (secure context)
       void navigator.clipboard.writeText(locationId);
-    } else {
+    } else /* istanbul ignore next */ {
       // Fallback for HTTP (non-secure) dev environments
       // Note: execCommand is deprecated but still widely supported as fallback
       const textarea = document.createElement('textarea');

src/course-unit/unit-sidebar/unit-info/UnitInfoSidebar.tsx

@@ -265,7 +265,7 @@ export const UnitInfoSidebar = () => {
     if (navigator.clipboard) {
       // Modern approach: requires HTTPS (secure context)
       void navigator.clipboard.writeText(locationId);
-    } else {
+    } else /* istanbul ignore next */ {
       // Fallback for HTTP (non-secure) dev environments
       // Note: execCommand is deprecated but still widely supported as fallback
       const textarea = document.createElement('textarea');