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[9.20] fix: usr: Fix algoritm rollover bug when there are two keys with the same keytag

bind-team-rw-api-rw-repo requested to merge backport-4878-fix-algorithm-rollover-keytag-conflict-bug-9.20 into bind-9.20

If there is an algorithm rollover and two keys of different algorithm share the same keytags, then there is a possibility that if we check that a key matches a specific state, we are checking against the wrong key. This has been fixed by not only checking for matching key tag but also key algorithm.

Closes #4878 (closed)

Backport of MR !9381 (merged)

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