[Feature Request] Remove time.Sleep() in commands.taskqueue_test.go

[antlai-temporal]

There is a server caching bug for the new versioning features that is fixed in: https://github.com/temporalio/temporal/pull/6978

Unfortunately, there are no OSS releases that currently include it at this point, so we need to add delays to get tests passing...

These delays should be removed in the next server release (>1.26.2)