[11.x] Optimize SetCacheHeaders to ensure error responses aren't cached #50903
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Problem:
Currently, error responses can be cached by the
cache.headers
middleware, leading to outdated errors for users.Solution:
This PR conditionally apply caching only when the response has a successful HTTP status code.
Changes:
SetCacheHeaders
middleware to only cache if the response is successful.Backward Compatibility:
This change is fully backward-compatible.
Documentation:
The Laravel documentation will need to be updated to reflect the new directive.