### 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 final_line = text_editor->get_line_count() - 1;
	String line = text_editor->get_line(final_line);
	
	
	if (line.length() > 0 && !line.ends_with("\n")) {
		text_editor->begin_complex_operation();
		line += "\n";
		text_editor->set_line(final_line, line);
		text_editor->end_complex_operation();
		text_editor->queue_redraw();
	}
}
void CodeTextEditor::convert_indent_to_spaces() {
	int indent_size = EDITOR_GET("text_editor/behavior/indent/size");
	String indent = "";
	for (int i = 0; i < indent_size; i++) {
		indent += " ";
	}
	Vector<int> cursor_columns;
	cursor_columns.resize(text_editor->get_caret_count());
	for (int c = 0; c < text_editor->get_caret_count(); c++) {
		cursor_columns.write[c] = text_editor->get_caret_column(c);
	}
	bool changed_indentation = false;
	for (int i = 0; i < text_editor->get_line_count(); i++) {
		String line = text_editor->get_line(i);
		if (line.length() <= 0) {
			continue;
		}