fix: Allow disabling Scalable Push Query ALOS to be set via config

[AlanConfluent]

Description

Allows scalable push queries to be set via sercer config, not just via the request.

Testing done

Tested the change manually and ran tests.

Reviewer checklist

• Ensure docs are updated if necessary. (eg. if a user visible feature is being added or changed).
• Ensure relevant issues are linked (description should include text like "Fixes #")

[guozhangwang]

Just to clarify, the config change still needs a bounce to be made effective right? Whereas a request would not.

[AlanConfluent]

Just to clarify, the config change still needs a bounce to be made effective right? Whereas a request would not.

@guozhangwang Yes, that's right. They can both be used with this change, so they can still enable/disabled it with the request if they want, but by default, it will use the server config which requires a roll to change.

[AlanConfluent]

Not sure why that top build link didn't get updated, it still shows the failed first build when there's a number 2 that passed. I'm going to merge.