chore: Set rest_numeric_enums = False for all gapic rules explicitly (

#1756)

* chore: Set `rest_numeric_enums = False` for all gapic rules explicitly

PiperOrigin-RevId: 485623855

Source-Link: googleapis/googleapis@807125e

Source-Link: googleapis/googleapis-gen@c4ddd6d
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gapic-google-cloud-storage-v2/src/main/java/com/google/storage/v2/StorageClient.java

@@ -137,11 +137,7 @@
  * // - It may require correct/in-range values for request initialization.
  * // - It may require specifying regional endpoints when creating the service client as shown in
  * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
- * StorageSettings storageSettings =
- *     StorageSettings.newBuilder()
- *         .setTransportChannelProvider(
- *             StorageSettings.defaultHttpJsonTransportProviderBuilder().build())
- *         .build();
+ * StorageSettings storageSettings = StorageSettings.newHttpJsonBuilder().build();
  * StorageClient storageClient = StorageClient.create(storageSettings);
  * }</pre>
  *