* JSON: Add support for Int128, UInt128 and Half and add Number support for Utf8JsonReader.CopyString(...)

* Remove parsing limits on Read and move Number support of CopyString to an internal helper

* Fix AllowNamedFloatingPointLiterals on Write for Half

* Specify InvariantCulture on TryParse and TryFormat
Fix handling of floating-point literals on HalfConverter
Remove CopyString tests related to Number support

* Add test for invalid number input format

* Fix net6.0 build error about missing Half.TryParse overload

* Move rentedCharBuffer logic to TryParse helper

* Address feedback

* Disable test for OSX