[Benchmark X64] [pentp] Cleanup exception throwing in Utf8JsonWriter

[MihuBot]

Job completed in 2 hours 21 minutes (remote runner delay: 58 seconds).

Using arguments: benchmark System.Text.Json -NoPRLink

See benchmark results at https://gist.github.com/MihuBot/df5a961862ecf7e9755423e10e362f8b

Artifacts:

• BDN_Artifacts.zip (3 MB)
• results.md (266 KB)

[MihaZupan]

dotnet/runtime#115702

@pentp added you to the allow list for commands now

[MihuBot]

@MihaZupan