fe/sr: empty string is not a named context

Author: r-vasquez

frontend/src/components/pages/schemas/schema-context-utils.test.ts

@@ -175,7 +175,7 @@ describe('isNamedContext', () => {
   });
 
   test('empty string is a named context', () => {
-    expect(isNamedContext('')).toBe(true);
+    expect(isNamedContext('')).toBe(false);
   });
 });
 

frontend/src/components/pages/schemas/schema-context-utils.ts

@@ -112,7 +112,7 @@ export function deriveContexts(
 // True for actual SR contexts (not the synthetic
 // "All" or "Default" entries).
 export function isNamedContext(contextId: string): boolean {
-  return contextId !== ALL_CONTEXT_ID && contextId !== DEFAULT_CONTEXT_ID;
+  return contextId != '' && contextId !== ALL_CONTEXT_ID && contextId !== DEFAULT_CONTEXT_ID;
 }
 
 // Convert a raw context name (e.g. from a URL param or parseSubjectContext)