USER ERROR: BUG: Unreferenced static string to 0: Physics2DConstraintSolveIslands

### Tested versions

4.3 dev6

### System information

android 11 api 30

### Issue description

USER ERROR: BUG: Unreferenced static string to 0: Physics2DConstraintSolveIslands
at: unref (core/string/string_name.cpp:127)
USER ERROR: BUG: Unreferenced static string to 0: Physics2DConstraintSetup
at: unref (core/string/string_name.cpp:127)
FORTIFY: pthread_mutex_lock called on a destroyed mutex (0x7b4a7b00cc)

### Steps to reproduce

There is no problem under Windows, but it appears under Android. I am using C #, which seems to be unable to debug under Android, and I am not sure where the problem lies

### Minimal reproduction project (MRP)

not have

Start with core/string/string_name.cpp:127 and the Android 11/API 30 shutdown output from Godot 4.3 dev6, then trace the Physics2DConstraintSolveIslands and Physics2DConstraintSetup references during teardown. Reproduce the report on Android if possible; done means identifying the destroyed-mutex or unreferenced-string cause and verifying the corrected behavior, but no minimal reproduction project is provided.

Written by the indexing model from the issue text.