Use cache-api instead of QueryAPI for Proposals and Rfp's

[Tguntenaar]

Resolves #968
Resolves #987

This PR replaces all instances where we call the near-queryapi for proposals and rfps in events committee, infra and devhub.

As it is a sub issue of the 🔷 EPIC: Replace Indexer.

It does not include the snapshot logging between all relationship changes of proposals and rfp's YET. That is on purpose.

Skipping discussions test

I've updated this PR to intentionally skip the failing test due to RPC timeouts. I created a bug issue #991 to track the problem and temporarily disabled the test to unblock the pipeline. A note referencing the issue has been added in the source code. The impact of losing test coverage is minimal, as we are considering removing communities from the platform entirely.

[Tguntenaar]

@Megha-Dev-19 we need to fix some of the tests and then this issues is finished.

[Tguntenaar]

@race-of-sloths include

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Reviewer	Score
@petersalomonsen	13

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[Tguntenaar]

Ready to review

[petersalomonsen]

@race-of-sloths score 13

[petersalomonsen]

I looked at it again, and I can't find anything. I hope our test-coverage is sufficient to ensure that critical functionality is not broken. Will you do a manual check of the functionality in all 3 instances after you've merged @Tguntenaar ?

[Tguntenaar]

@petersalomonsen I will do the manual check right now 👍🏻