### Godot version

v4.0.beta14.official

### System information

Windows 11 22H2

### Issue description

There's not much to it, simply noticed that if you have Find or Find+Replace opened in the Script Editor, the Multi-Caret functionality seems to stop working -- forcibly removing all other carets after the first character is typed. I'd expect the Multi-Caret to remain until unselected by clicking elsewhere.

The content of what's in "Find" doesn't matter, it happens regardless.

https://user-images.githubusercontent.com/8159582/214234069-cbcc1681-3f09-4b10-9a90-857cc91d41a7.mp4



### Steps to reproduce

1. Open the Find or Find+Replace tool in the Script Editor _(nothing has to be inputted)_
2. Add multiple mouse cursors with Ctrl+Alt+Click **OR** highlight something and then highlight additional duplicates with Ctrl+D _(or synonymous keyboard shortcuts depending on OS)_.
3. Start typing as if going to add or replace in all locations where the multi-caret is

### Minimal reproduction project

N/A
if (!text_editor->has_selection(0) || is_selection_only()) {
		r_line = text_editor->get_caret_line(0);
		r_col = text_editor->get_caret_column(0);
		if (!p_is_searching_next && r_line == result_line && r_col >= result_col && r_col <= result_col + get_search_text().length()) {
			r_col = result_col;
		}
		return;
	}
	if (p_is_searching_next) {
		r_line = text_editor->get_selection_to_line();
		r_col = text_editor->get_selection_to_column();
	} else {
		r_line = text_editor->get_selection_from_line();
		r_col = text_editor->get_selection_from_column();
	}
}
void FindReplaceBar::_update_results_count() {