### 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 (prev != pos) {
						p_sd->chars.push_back(pos);
					}
					prev = pos;
				}
				ubrk_close(bi);
			} else {
				for (int j = r_start; j < r_end; j++) {
					if (prev != j) {
						p_sd->chars.push_back(j + 1 + p_sd->start);
					}
					prev = j;
				}
			}
			i++;
		}
		p_sd->chars_valid = true;
	}
}
PackedInt32Array TextServerAdvanced::_shaped_text_get_character_breaks(const RID &p_shaped) const {
	ShapedTextDataAdvanced *sd = shaped_owner.get_or_null(p_shaped);
	ERR_FAIL_COND_V(!sd, PackedInt32Array());
	MutexLock lock(sd->mutex);
	if (!sd->valid) {
		const_cast<TextServerAdvanced *>(this)->_shaped_text_shape(p_shaped);
	}
	_update_chars(sd);
	return sd->chars;
}
bool TextServerAdvanced::_shaped_text_update_breaks(const RID &p_shaped) {