### 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
if (antialiasing != p_antialiasing) {
		antialiasing = p_antialiasing;
		if (base_font.is_valid()) {
			base_font->set_antialiasing(antialiasing);
		}
		emit_changed();
	}
}
TextServer::FontAntialiasing SystemFont::get_antialiasing() const {
	return antialiasing;
}
void SystemFont::set_generate_mipmaps(bool p_generate_mipmaps) {
	if (mipmaps != p_generate_mipmaps) {
		mipmaps = p_generate_mipmaps;
		if (base_font.is_valid()) {
			base_font->set_generate_mipmaps(mipmaps);
		}
		emit_changed();
	}
}
bool SystemFont::get_generate_mipmaps() const {