http: fix rawHeaders exceeding maxHeadersCount limit #2103

Job	Run time
Build slim tarball	1m 33s
x86_64-linux: with shared libraries	2h 4m 22s
aarch64-darwin: with shared libraries	2h 24m 54s
x86_64-darwin: with shared libraries	2h 37m 50s
aarch64-linux: with shared libraries	1h 32m 32s
	8h 41m 11s

Provide feedback