### 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.
p_to_column = text[p_to_line].length();
	}
	if (p_to_column < 0) {
		p_to_column = 0;
	}
	carets.write[p_caret].selection.from_line = p_from_line;
	carets.write[p_caret].selection.from_column = p_from_column;
	carets.write[p_caret].selection.to_line = p_to_line;
	carets.write[p_caret].selection.to_column = p_to_column;
	carets.write[p_caret].selection.active = true;
	if (carets[p_caret].selection.from_line == carets[p_caret].selection.to_line) {
		if (carets[p_caret].selection.from_column == carets[p_caret].selection.to_column) {
			carets.write[p_caret].selection.active = false;
		} else if (carets[p_caret].selection.from_column > carets[p_caret].selection.to_column) {
			carets.write[p_caret].selection.shiftclick_left = false;
			SWAP(carets.write[p_caret].selection.from_column, carets.write[p_caret].selection.to_column);
		} else {
			carets.write[p_caret].selection.shiftclick_left = true;
		}
	} else if (carets[p_caret].selection.from_line > carets[p_caret].selection.to_line) {
		carets.write[p_caret].selection.shiftclick_left = false;
		SWAP(carets.write[p_caret].selection.from_line, carets.write[p_caret].selection.to_line);
		SWAP(carets.write[p_caret].selection.from_column, carets.write[p_caret].selection.to_column);
	} else {
		carets.write[p_caret].selection.shiftclick_left = true;
	}
	caret_index_edit_dirty = true;
	queue_redraw();
}
bool TextEdit::has_selection(int p_caret) const {