VersionAlert for Unity

Fixed the managed fallback for bursts intrinsic functions `cvt_ss2si`, `cvtss_si32`, and `cvtss_si64` to follow midpoint rounding standard of nearest even.
Fixed an issue where use of certain intrinsics could cause a compile error even if properly guarded by the appropriate `IsXXXSupported` property.
If an exception is thrown from burst compiled code in the Editor on Windows there was potential for certain callee saved registers to be corrupted. In order to fix this ( editor only - player builds are unaffected), we now save some additional context on each entry point.
Fixed burst not differentiating between overloaded generic functions such as T foo(int val) and T foo(T val) when the function calls are foo(1); foo(1). Burst would previously only compile the T foo(T val) function.
Fixed android builds throwing a NullReferenceException.
Fixed arithmetic and bitwise negation on native integers.
Fixed an issue where underflows of nint and nuint at compile time would lead to incorrect code.
Burst recompiles assemblies due to hashes mismatching because of the way assembly defines are combined into the hash.
Fixed constant SHUFFLE function not seen as a constant when called indirectly through a `FunctionPointer`

com.unity.burst 1.8.12