### 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
int j = 0;
		while (j < line.length() && (line[j] == ' ' || line[j] == '\t')) {
			if (line[j] == '\t') {
				if (!changed_indentation) {
					text_editor->begin_complex_operation();
					changed_indentation = true;
				}
				for (int c = 0; c < text_editor->get_caret_count(); c++) {
					if (text_editor->get_caret_line(c) == i && text_editor->get_caret_column(c) > j) {
						cursor_columns.write[c] += indent_size - 1;
					}
				}
				line = line.left(j) + indent + line.substr(j + 1);
			}
			j++;
		}
		if (changed_indentation) {
			text_editor->set_line(i, line);
		}
	}
	if (changed_indentation) {
		for (int c = 0; c < text_editor->get_caret_count(); c++) {
			text_editor->set_caret_column(cursor_columns[c], c == 0, c);
		}
		text_editor->merge_overlapping_carets();
		text_editor->end_complex_operation();
		text_editor->queue_redraw();
	}
}
void CodeTextEditor::convert_indent_to_tabs() {