* add test
* added runtime endpoint test for `new Response`
* added `try..catch` for reroute directive handling
Fixes#9871
* added changeset
* replaced `try..catch` with HTTP status code check
based on the suggestion of @lilnasy
* updated changeset description
* added more tests for the endpoint reroute header
* fixed grammar in `renderEndpoint` comment
* updated endpoint tests to check for the reroute directive header in lower-case
* updated changeset description
