### 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 (p_direction == HB_DIRECTION_RTL || p_direction == HB_DIRECTION_BTT) {
		gl.flags |= TextServer::GRAPHEME_IS_RTL;
	}
	gl.font_rid = p_font;
	gl.font_size = p_font_size;
	if (glyph_count > 0) {
		if (p_sd->orientation == ORIENTATION_HORIZONTAL) {
			if (subpos) {
				gl.advance = (double)glyph_pos[0].x_advance / (64.0 / scale) + _get_extra_advance(p_font, p_font_size);
			} else {
				gl.advance = Math::round((double)glyph_pos[0].x_advance / (64.0 / scale) + _get_extra_advance(p_font, p_font_size));
			}
		} else {
			gl.advance = -Math::round((double)glyph_pos[0].y_advance / (64.0 / scale));
		}
		gl.count = 1;
		gl.index = glyph_info[0].codepoint;
		if (subpos) {
			gl.x_off = (double)glyph_pos[0].x_offset / (64.0 / scale);
		} else {
			gl.x_off = Math::round((double)glyph_pos[0].x_offset / (64.0 / scale));
		}
		gl.y_off = -Math::round((double)glyph_pos[0].y_offset / (64.0 / scale));
		if ((glyph_info[0].codepoint != 0) || !u_isgraph(p_char)) {
			gl.flags |= GRAPHEME_IS_VALID;
		}
	}
	return gl;
}
_FORCE_INLINE_ void TextServerAdvanced::_add_featuers(const Dictionary &p_source, Vector<hb_feature_t> &r_ftrs) {