fix: allow for use of both manual & fetchEvent based HTTP #827

Job	Run time
lint	47s
build-splicer (windows-latest)	12s
build-splicer (ubuntu-latest)	5s
build (debug)	13s
build (release)	14s
build (weval)	14s
test-example	44s
test (23.10.0, ubuntu-latest, weval)	10m 20s
test (23.10.0, windows-latest, debug)	9m 11s
test (23.10.0, macos-latest, debug)	6m 59s
test (23.10.0, windows-latest, release)	8m 13s
test (23.10.0, macos-latest, weval)	11m 22s
test (23.10.0, windows-latest, weval)	13m 29s
test (23.10.0, ubuntu-latest, release)	6m 47s
test (23.10.0, ubuntu-latest, debug)	7m 33s
test (23.10.0, macos-latest, release)	6m 53s
	1h 23m 16s

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