chore(reflection): Refactor ServerReflectionInfoStream #3947

Job	Run time
codegen	35s
deny	18s
check (ubuntu-latest)	3m 23s
clippy	1m 18s
check (macOS-latest)	4m 32s
Interop Tests (ubuntu-latest)	1m 1s
msrv	1m 1s
Interop Tests (macOS-latest)	1m 6s
check (windows-latest)	6m 33s
Interop Tests (windows-latest)	3m 19s
rustfmt	13s
semver	1m 10s
test (ubuntu-latest)	2m 2s
udeps	4m 14s
test (macOS-latest)	2m 18s
test (windows-latest)	2m 2s
external-types	41s
	35m 46s

Provide feedback