Fix activity verification after key rotation

What does this PR do?

Fixes two minor bugs in the key re-fetch logic:

• After a user's keys rotate, the very next activity will fail to validate. All further ones succeed.
• If a user's keys are deleted for some reason, they will stick around in the cache for up to 12 hours.

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• I agree to follow this project's Contribution Guidelines
• I have made sure to test this pull request

added 1 commit

• 7b536e7b - normalize re-fetch logic between InboxProcessorService and ActivityPubServerService

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added 11 commits

• 7b536e7b...b15f2575 - 7 commits from branch TransFem-org:develop
• 42dcff3a - remove cached public keys after deletion
• 9fada7b2 - fix public key re-fetch logic
• 2544e71d - log key rotation
• 6d5b4464 - normalize re-fetch logic between InboxProcessorService and ActivityPubServerService

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added bugbackend label

resolved all threads

approved this merge request

added 31 commits

• 6d5b4464...68b90df0 - 27 commits from branch TransFem-org:develop
• 7c04c7a5 - remove cached public keys after deletion
• 8acb5502 - fix public key re-fetch logic
• 7d99797c - log key rotation
• 98996d03 - normalize re-fetch logic between InboxProcessorService and ActivityPubServerService

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added 273 commits

• 98996d03...ba17776b - 269 commits from branch TransFem-org:develop
• 94382777 - remove cached public keys after deletion
• 42cd070c - fix public key re-fetch logic
• 144178ec - log key rotation
• 05bfab22 - normalize re-fetch logic between InboxProcessorService and ActivityPubServerService

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reset approvals from @dakkar by pushing to the branch

approved this merge request

added 61 commits

• 05bfab22...55df1ad1 - 57 commits from branch TransFem-org:develop
• 78a75171 - remove cached public keys after deletion
• 5eb9a263 - fix public key re-fetch logic
• c0a5955e - log key rotation
• 27b502fa - normalize re-fetch logic between InboxProcessorService and ActivityPubServerService

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marked this merge request as ready

marked the checklist item I have made sure to test this pull request as completed

enabled an automatic merge when all merge checks for 27b502fa pass

approved this merge request

mentioned in commit 6e5cbedc

merged

added federation label