[TT-11505 ] OAS controller reconciliation logic optimisations

buraksekili commented 3 months ago

Description

Update delete reconciliation logic to handle deletion of non-existing APIs.
Optimise reconcilition of OAS APIs - prevent sending redundant PUT requests to Tyk which may be costly.

[ ] Bug fix (non-breaking change which fixes an issue)
[ ] New feature (non-breaking change which adds functionality)
[ ] Breaking change (fix or feature that would cause existing functionality to change)

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[ ] My change requires a change to the documentation.
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