Move TypeReference.ToObject to managed (CoreCLR) (#70055)

Move TypeReference.ToObject to managed (CoreCLR) (#70055)

* Initial partial TypedReference.ToObject managed port

* Port rest of mamaged TypeDesc method table logic

* Add RuntimeTypeHandle.GetElementTypeMethodTable FCall

* Remove TypedReference.InternalToObject FCall

* Remove throwing path, add an assert

* Remove unnecessary TypeDesc paths

* Remove ParamTypeDesc::m_TemplateMT and related code

* Fix TypeDesc::GetMethodTable

* Reuse RuntimeTypeHandle.GetValueInternal to drop an FCall

* Add unit tests for TypedReference.ToObject and type desc

* Move ifdef methods to TypedReference.Mono file

* Skip new TypedReference tests on Mono

* Use [ActiveIssue] instead of [SkipOnMono]

* Commented tests out to skip Mono AOT failure