### 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.
Ref<StyleBox> style = theme_cache.normal;
	Ref<Font> font = theme_cache.font;
	int font_size = theme_cache.font_size;
	Size2 min_size;
	
	float em_space_size = font->get_char_size('M', font_size).x;
	min_size.width = theme_cache.minimum_character_width * em_space_size;
	if (expand_to_text_length) {
		
		min_size.width = MAX(min_size.width, full_width + em_space_size);
	}
	min_size.height = MAX(TS->shaped_text_get_size(text_rid).y, font->get_height(font_size));
	
	int icon_max_width = 0;
	if (right_icon.is_valid()) {
		min_size.height = MAX(min_size.height, right_icon->get_height());
		icon_max_width = right_icon->get_width();
	}
	if (clear_button_enabled) {
		min_size.height = MAX(min_size.height, theme_cache.clear_icon->get_height());
		icon_max_width = MAX(icon_max_width, theme_cache.clear_icon->get_width());
	}
	min_size.width += icon_max_width;
	return style->get_minimum_size() + min_size;
}
void LineEdit::deselect() {