chore: Set rest_numeric_enums = False for all gapic rules explicitly (#783)

- [ ] 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-os-login/google-cloud-os-login/src/main/java/com/google/cloud/oslogin/v1/OsLoginServiceClient.java

@@ -113,10 +113,7 @@
  * // - 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
  * OsLoginServiceSettings osLoginServiceSettings =
- *     OsLoginServiceSettings.newBuilder()
- *         .setTransportChannelProvider(
- *             OsLoginServiceSettings.defaultHttpJsonTransportProviderBuilder().build())
- *         .build();
+ *     OsLoginServiceSettings.newHttpJsonBuilder().build();
  * OsLoginServiceClient osLoginServiceClient = OsLoginServiceClient.create(osLoginServiceSettings);
  * }</pre>
  *