Rebalance common headers

[benaadams]

Some headers in common are only used for request or response; so move them to those collections rather than having them in both.

Note: this doesn't mean they are common enough to be kept in the collections; however they definitely shouldn't be in both request and response collections.

Moved from both to only Response headers; shrinking Request headers by 72 bytes.

• Trailer
• Allow
• ContentEncoding
• ContentLanguage
• ContentLocation
• ContentMD5
• ContentRange
• Expires
• LastModified

Contributes to #31492

[Tratcher]

Test failure:
Microsoft.AspNetCore.Server.Kestrel.Core.Tests.Http2HPackEncoderTests.BeginEncodeHeaders_MaxHeaderTableSizeExceeded_EvictionsToFit

Assert.Equal() Failure
↓ (pos 99)
Expected: ···A-32-32-20-47-4D-54-5A-04-67-7A-69-70-C1-1F-28-38-66-6F-6F-3D···
Actual:   ···A-32-32-20-47-4D-54-C0-1F-28-38-66-6F-6F-3D-41-53-44-4A-4B-48···
↑ (pos 99)

[benaadams]

Test failure:
Microsoft.AspNetCore.Server.Kestrel.Core.Tests.Http2HPackEncoderTests.BeginEncodeHeaders_MaxHeaderTableSizeExceeded_EvictionsToFit

Enumerator ordering; will change to be alpha sorted rather than listing ordered so is less fragile

[benaadams]

Rebased and made the ordering more deteministic so http2 header compression tests are less sensitive to where something is in the list in KnownHeaders.cs

[benaadams]

@BrennanConroy don't think its pending author input anymore?

[BrennanConroy]

Yeah, I think the bot is supposed to remove that :/

[Tratcher]

Thanks