chore: Set rest_numeric_enums = False for all gapic rules explicitly (#504)

- [ ] Regenerate this pull request now.

PiperOrigin-RevId: 485623855

Source-Link: https://togithub.com/googleapis/googleapis/commit/807125e7953e32535710924fe4bf0362ac93754d

Source-Link: https://togithub.com/googleapis/googleapis-gen/commit/c4ddd6d651da69658a4762c5eafff5cd8f0e25c5
Copy-Tag: eyJwIjoiLmdpdGh1Yi8uT3dsQm90LnlhbWwiLCJoIjoiYzRkZGQ2ZDY1MWRhNjk2NThhNDc2MmM1ZWFmZmY1Y2Q4ZjBlMjVjNSJ9

Author: gcf-owl-bot[bot]

java-iam/google-iam-policy/src/main/java/com/google/iam/v2/PoliciesClient.java

@@ -119,11 +119,7 @@
  * // - 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
- * PoliciesSettings policiesSettings =
- *     PoliciesSettings.newBuilder()
- *         .setTransportChannelProvider(
- *             PoliciesSettings.defaultHttpJsonTransportProviderBuilder().build())
- *         .build();
+ * PoliciesSettings policiesSettings = PoliciesSettings.newHttpJsonBuilder().build();
  * PoliciesClient policiesClient = PoliciesClient.create(policiesSettings);
  * }</pre>
  *

java-iam/google-iam-policy/src/main/java/com/google/iam/v2beta/PoliciesClient.java

@@ -119,11 +119,7 @@
  * // - 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
- * PoliciesSettings policiesSettings =
- *     PoliciesSettings.newBuilder()
- *         .setTransportChannelProvider(
- *             PoliciesSettings.defaultHttpJsonTransportProviderBuilder().build())
- *         .build();
+ * PoliciesSettings policiesSettings = PoliciesSettings.newHttpJsonBuilder().build();
  * PoliciesClient policiesClient = PoliciesClient.create(policiesSettings);
  * }</pre>
  *