Use middleware to handle comma-separated query params #12995
Merged
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What type of PR is this?
Other
What does this PR do? Why is it needed?
This is a more future-proof solution to handling comma-separated query parameters than #12966. We now use an http middleware to inject custom code before invoking handlers.
Unit testing this functionality from the level of individual handlers is no longer possible. A much better test is passing comma-separated values in e2e, which I added to the Beacon API evaluator.
Which issues(s) does this PR fix?
Part of #12958