[BugBash][CLI]not output for permission check

[juniwang]

Describe the bug

not output for permission check

To Reproduce

• start a client az webpubsub client start -g jw1111 -n jw2222 --hub-name hub2 --user-id u1
• join a group: joingroup a
• check permision by az webpubsub service permission check -g jw1111 -n jw2222 --hub-name hub2 --group-name a --connection-id xF3wurhKa_JkiAG1sFtMkA896e70a41 --permission joinLeaveGroup

Expected result: return true or false Actual result: no output, it's empty.

Exceptions (if any)

Further technical details

• SDK and its version you use

[juniwang]

Same issue for Grant: az webpubsub service permission grant

[zackliu]

https://github.com/Azure/azure-cli-extensions/pull/4049