Add rum application to restriction policy

[api-clients-generation-pipeline[bot]]

See DataDog/datadog-api-spec#3648 Test branch datadog-api-spec/test/roger.kim/RUM-9061/api

[datadog-datadog-prod-us1[bot]]

Datadog Report

Branch report: datadog-api-spec/generated/3648 Commit report: 7a37576 Test service: datadog-api-client-ruby

:white_check_mark: 0 Failed, 1082 Passed, 2209 Skipped, 2m 0.39s Total duration (1m 18s time saved)

[github-actions[bot]]

This PR has been automatically marked as stale because it has not had activity in the last 30 days. If there is no activity for another 90 days, this issue will be automatically closed.