[runtime] Handle RuntimeWrappedException and dynamic methods.

[runtime] Handle RuntimeWrappedException and dynamic methods.

Introduce MonoDynamicMethod that holds the assembly of a DM (and TB).
Use it to determine the RuntimeWrappedException policy for exceptions.

This is needed cuz the assembly of a MonoMethod is normally found using method->parent->image->assembly.

But this doesn't work with DynamicMethods that don't define an owner type as they are forced to corlib's policy.

The default policy for DM's is to not wrap those exceptions and in the case a Module is provided, the policy of that module must be respected.

This commit handles all cases but when a Module is a SRE module.