…types and clean up tests (#8705)

* Fix bug in Reader skip. When the skip count + current position is 1 > than the current buffer size, skip will "overread" the buffer, setting the position to a point > the buffer size.

This causes the next read to advance the buffer and consume the first byte which the skip should have already consumed but didn't.

* Update src/Orleans.Serialization/Buffers/Reader.cs

* Add BufferSlice test

* More verification and comments

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Co-authored-by: Reuben Bond <203839+ReubenBond@users.noreply.github.com>
Co-authored-by: Reuben Bond <reuben.bond@gmail.com>

Co-authored-by: b.nichvolodov <b.nichvolodov@vk.team>

…8719)

…8720)

Co-authored-by: b.nichvolodov <b.nichvolodov@vk.team>

… tracking for all Exception-derived types (#8628) (#8698)

* Throw ReferenceFieldNotSupportedException on references for serialized exceptions

* Move tests to a more appropriate place

* Prevent reference tracking for generated exception codecs and exception surrogates

* Remove accidentally introduced class

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Co-authored-by: David Obee <git@davidobee.com>

* Updated test to reflect counting issue

* Only increment and adjust size on Add

* Updated LRU count computation logic

Co-authored-by: Koen <koen@bpk.ltd>

…ntil = DateTime.MaxValue (#8740) (#8755)

Co-authored-by: nichvolodov <nichvolodov.boris@gmail.com>
Co-authored-by: boris.nichvolodov <boris.nichvolodov@my.games>

Co-authored-by: peter-perot <peter-perot@users.noreply.github.com>

Single case discriminated unions do not inherit from an abstract
base class, thus, for single case discriminated unions we need to
look for the CompilationMappingAttribute on the type itself.

Fix 8715

Co-authored-by: Geir Fiksdal <geirfiks@gmail.com>