### Godot version

4.0 beta 15

### System information

Windows 10

### Issue description

It happened with both Google IME and MS-IME, and there was no problem until Beta14.
When typing Japanese characters, it is common to select a character from the suggestion window and then start typing the next character before confirming.
In this case, uncommitted characters are forcibly committed, and input of the next character begins.

**↓Beta15**

https://user-images.githubusercontent.com/186786/214753450-b493cca6-2644-4b3d-8cd2-660565cc3547.mp4

**↓Beta14**

https://user-images.githubusercontent.com/186786/214755127-dde819cc-4d63-403a-99b0-09821671f74e.mp4



### Steps to reproduce

It happened with both Google IME and MS-IME in beta15

### Minimal reproduction project

It is project independent and happens in the editor.
ERR_FAIL_COND(p_caret > carets.size());
	if (!editable) {
		return;
	}
	String clipboard = DisplayServer::get_singleton()->clipboard_get();
	Vector<String> clipboad_lines = clipboard.split("\n");
	bool insert_line_per_caret = p_caret == -1 && carets.size() > 1 && clipboad_lines.size() == carets.size();
	begin_complex_operation();
	Vector<int> caret_edit_order = get_caret_index_edit_order();
	int clipboad_line = clipboad_lines.size() - 1;
	for (const int &i : caret_edit_order) {
		if (p_caret != -1 && p_caret != i) {
			continue;
		}
		if (has_selection(i)) {
			delete_selection(i);
		} else if (!cut_copy_line.is_empty() && cut_copy_line == clipboard) {
			set_caret_column(0, i == 0, i);
			String ins = "\n";
			clipboard += ins;
		}
		if (insert_line_per_caret) {
			clipboard = clipboad_lines[clipboad_line];
		}
		insert_text_at_caret(clipboard, i);
		clipboad_line--;
	}
	end_complex_operation();
}
void TextEdit::_paste_primary_clipboard_internal(int p_caret) {