### 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, Size2());
	MutexLock lock(sd->mutex);
	if (!sd->valid) {
		const_cast<TextServerAdvanced *>(this)->_shaped_text_shape(p_shaped);
	}
	if (sd->orientation == TextServer::ORIENTATION_HORIZONTAL) {
		return Size2((sd->text_trimmed ? sd->width_trimmed : sd->width), sd->ascent + sd->descent + sd->extra_spacing[SPACING_TOP] + sd->extra_spacing[SPACING_BOTTOM]).ceil();
	} else {
		return Size2(sd->ascent + sd->descent + sd->extra_spacing[SPACING_TOP] + sd->extra_spacing[SPACING_BOTTOM], (sd->text_trimmed ? sd->width_trimmed : sd->width)).ceil();
	}
}
double TextServerAdvanced::_shaped_text_get_ascent(const RID &p_shaped) const {
	const ShapedTextDataAdvanced *sd = shaped_owner.get_or_null(p_shaped);
	ERR_FAIL_COND_V(!sd, 0.0);
	MutexLock lock(sd->mutex);
	if (!sd->valid) {
		const_cast<TextServerAdvanced *>(this)->_shaped_text_shape(p_shaped);
	}
	return sd->ascent + sd->extra_spacing[SPACING_TOP];
}
double TextServerAdvanced::_shaped_text_get_descent(const RID &p_shaped) const {