### Godot version

8449592d92eaeef990f5502b419d491ee3eeb7a6

### System information

Windows 11

### Issue description

Zooming in the script editor on an empty script freezes the entire editor for a few seconds, but if the file is large then it freezes for 4-5 seconds (which is unacceptable). Looks like a recent regression.

### Steps to reproduce

Just zoom in/out on the large script file.

### Minimal reproduction project

N/A
FontAdvanced *fd = font_owner.get_or_null(p_font_rid);
	ERR_FAIL_COND_V(!fd, 0.0);
	MutexLock lock(fd->mutex);
	return fd->oversampling;
}
TypedArray<Vector2i> TextServerAdvanced::_font_get_size_cache_list(const RID &p_font_rid) const {
	FontAdvanced *fd = font_owner.get_or_null(p_font_rid);
	ERR_FAIL_COND_V(!fd, TypedArray<Vector2i>());
	MutexLock lock(fd->mutex);
	TypedArray<Vector2i> ret;
	for (const KeyValue<Vector2i, FontForSizeAdvanced *> &E : fd->cache) {
		ret.push_back(E.key);
	}
	return ret;
}
void TextServerAdvanced::_font_clear_size_cache(const RID &p_font_rid) {
	FontAdvanced *fd = font_owner.get_or_null(p_font_rid);
	ERR_FAIL_COND(!fd);
	MutexLock lock(fd->mutex);
	MutexLock ftlock(ft_mutex);
	for (const KeyValue<Vector2i, FontForSizeAdvanced *> &E : fd->cache) {
		memdelete(E.value);
	}
	fd->cache.clear();
}
void TextServerAdvanced::_font_remove_size_cache(const RID &p_font_rid, const Vector2i &p_size) {