Fixed logic around fallback resolver in URIResolverRegistry #2012

Job	Run time
test-linux	2m 41s
builds	15m 45s
tests (windows-latest)	4m 26s
tests (macos-latest)	2m 31s
tests (buildjet-4vcpu-ubuntu-2204-arm)	3m 56s
	29m 19s

Provide feedback