Handle AA config failure (#9660)

* Clarify some comments

* Add error state in case of config failure

* Add retry button and relayout to accommodate

src/ageAssurance/state.ts

@@ -30,12 +30,19 @@ export function useAgeAssuranceState(): AgeAssuranceState {
         access: AgeAssuranceAccess.Safe,
       }
 
-    // should never happen, but need to guard
+    /**
+     * This can happen if the prefetch fails (such as due to network issues).
+     * The query handler will try it again, but if it continues to fail, of
+     * course we won't have config.
+     *
+     * In this case, fail open to avoid blocking users.
+     */
     if (!config) {
       logger.warn('useAgeAssuranceState: missing config')
       return {
         status: AgeAssuranceStatus.Unknown,
-        access: AgeAssuranceAccess.Unknown,
+        access: AgeAssuranceAccess.Safe,
+        error: 'config',
       }
     }