[mono] Remove domain lock (#50328)

[mono] Remove domain lock (#50328)

* [mono] Reduce domain lock usage.

* Avoid double locking the loader+domain lock, its not needed.
* Use the mem manager lock and the loader lock in a few places instead of
  the domain lock.
* Use lock free code in mono_jit_runtime_invoke ().
* Avoid locking around mono_jit_info_table_add (), it does locking itself.

* [mono] Internalize access to MonoMemoryManager.mp to memory-manager.c.

Also add a separate non-coop lock to protect it, since its accessed
very frequently.

* Use a separate lock for each memory manager.

* Remove the domain lock.