* Ensure JsonSerializer always HTML encodes output.
* Update JsonOptions.JsonSerializerOptions to use encoder scheme that does not encode non-ASCII
characters by default. This makes the encoding comparable to Json.NET's defaults
* In SystemTextJsonHelper, ensure that the content is always HTML-encoded
* Unskip skipped test
Fixes https://github.com/aspnet/AspNetCore/issues/9946
Fixes https://github.com/aspnet/AspNetCore/issues/11459
- Create an Activity if there's a diagnostic listener attached with the activity name or if logging is enabled.
- Add the activity id to the logging scope (and call the field ActivityId)
Pranav K
David Fowler