[Fuzzing] [ManickaP] [HTTP] Stricter header value validation

[MihuBot]

Job completed in 1 hour 31 minutes (remote runner delay: 2 minutes 43 seconds).

Using arguments: fuzz HttpHeaders -NoPRLink

Ran the fuzzer(s) successfully.

Artifacts:

• HttpHeadersFuzzer-inputs.zip (2 MB)

[MihaZupan]

dotnet/runtime#116634

[MihuBot]

@MihaZupan