[Breaking change]: Type.GetType throws TypeLoadException

[jkotas]

Old behavior

Type.GetType(string) throws TypeLoadException for most types with invalid element type, except a few corner cases such as byref-of-byref.

New behavior

Type.GetType throws TypeLoadException for all types with invalid element type, including byref-of-byref.

Example

• Type.GetType("System.Object&&") - returns null in .NET 7, throws TypeLoadException in .NET 8
• Type.GetType("System.TypedReference[]") - throws TypeLoadException in all .NET versions

Introduced by https://github.com/dotnet/runtime/pull/83484.

[jkotas]

More context: https://github.com/dotnet/runtime/issues/98426