refactor(plugins): tighten web fetch provider boundary (#59646)

* refactor(plugins): tighten web fetch provider boundary

* fix(config): sync fetch secret parity and baseline

* fix(ci): enforce web fetch boundary guard

test/helpers/plugins/web-fetch-provider-contract.ts

@@ -39,6 +39,7 @@ export function describeWebFetchProviderContracts(pluginId: string) {
           }
           return entry.credentialValue;
         },
+        pluginId,
       });
     });
   }