Deprecation proposal: Block build-id as a search attribute

[Shivs11]

What changed?

• Adds a log with the WARN level for Search Attributes having BuildIds set.
• Only a log statement has been added, for now, since rejecting such requests would mean breaking changes for current customers writing them.
• Thus, for now, we should notify them that this change is going to take place and plan in which version we deprecate moving forward, to reject such requests.

Why?

• BuildIds is a default SA and should not be set by the customer.

How did you test it?

• added unit tests
• existing suite of tests

Potential risks

none, just a logging statement is being added for now.

Is hotfix candidate?

nope