fix: allow for use of both manual & fetchEvent based HTTP #810

Job	Run time
build-splicer (windows-latest)	12s
build-splicer (ubuntu-latest)	7s
lint	9s
build (release)	7s
build (debug)	7s
build (weval)	13s
test-example	34s
test (23.10.0, ubuntu-latest, release)	6m 34s
test (23.10.0, ubuntu-latest, weval)	10m 13s
test (23.10.0, windows-latest, debug)	9m 16s
test (23.10.0, macos-latest, release)	4m 20s
test (23.10.0, windows-latest, release)	7m 44s
test (23.10.0, ubuntu-latest, debug)	7m 37s
test (23.10.0, windows-latest, weval)	12m 31s
test (23.10.0, macos-latest, debug)	5m 53s
test (23.10.0, macos-latest, weval)	6m 57s
	1h 12m 34s

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