### 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
const ShapedTextDataAdvanced *sd = shaped_owner.get_or_null(p_shaped);
	ERR_FAIL_COND_V(!sd, false);
	MutexLock lock(sd->mutex);
	return sd->valid;
}
const Glyph *TextServerAdvanced::_shaped_text_get_glyphs(const RID &p_shaped) const {
	const ShapedTextDataAdvanced *sd = shaped_owner.get_or_null(p_shaped);
	ERR_FAIL_COND_V(!sd, nullptr);
	MutexLock lock(sd->mutex);
	if (!sd->valid) {
		const_cast<TextServerAdvanced *>(this)->_shaped_text_shape(p_shaped);
	}
	return sd->glyphs.ptr();
}
int64_t TextServerAdvanced::_shaped_text_get_glyph_count(const RID &p_shaped) const {