azure-cli-testsdk not handled subscription mask under key "subscription"

[AllyW]

please refer to https://github.com/Azure/azure-cli-extensions/pull/8327/files#r1872528606

[AllyW]

cli code: https://github.com/Azure/azure-cli/blob/dev/src/azure-cli-testsdk/azure/cli/testsdk/scenario_tests/recording_processors.py#L29