### 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.
ClassDB::bind_method(D_METHOD("_text_changed"), &LineEdit::_text_changed);
	ClassDB::bind_method(D_METHOD("set_horizontal_alignment", "alignment"), &LineEdit::set_horizontal_alignment);
	ClassDB::bind_method(D_METHOD("get_horizontal_alignment"), &LineEdit::get_horizontal_alignment);
	ClassDB::bind_method(D_METHOD("clear"), &LineEdit::clear);
	ClassDB::bind_method(D_METHOD("select", "from", "to"), &LineEdit::select, DEFVAL(0), DEFVAL(-1));
	ClassDB::bind_method(D_METHOD("select_all"), &LineEdit::select_all);
	ClassDB::bind_method(D_METHOD("deselect"), &LineEdit::deselect);
	ClassDB::bind_method(D_METHOD("has_selection"), &LineEdit::has_selection);
	ClassDB::bind_method(D_METHOD("get_selection_from_column"), &LineEdit::get_selection_from_column);
	ClassDB::bind_method(D_METHOD("get_selection_to_column"), &LineEdit::get_selection_to_column);
	ClassDB::bind_method(D_METHOD("set_text", "text"), &LineEdit::set_text);
	ClassDB::bind_method(D_METHOD("get_text"), &LineEdit::get_text);
	ClassDB::bind_method(D_METHOD("get_draw_control_chars"), &LineEdit::get_draw_control_chars);
	ClassDB::bind_method(D_METHOD("set_draw_control_chars", "enable"), &LineEdit::set_draw_control_chars);
	ClassDB::bind_method(D_METHOD("set_text_direction", "direction"), &LineEdit::set_text_direction);
	ClassDB::bind_method(D_METHOD("get_text_direction"), &LineEdit::get_text_direction);
	ClassDB::bind_method(D_METHOD("set_language", "language"), &LineEdit::set_language);
	ClassDB::bind_method(D_METHOD("get_language"), &LineEdit::get_language);
	ClassDB::bind_method(D_METHOD("set_structured_text_bidi_override", "parser"), &LineEdit::set_structured_text_bidi_override);
	ClassDB::bind_method(D_METHOD("get_structured_text_bidi_override"), &LineEdit::get_structured_text_bidi_override);
	ClassDB::bind_method(D_METHOD("set_structured_text_bidi_override_options", "args"), &LineEdit::set_structured_text_bidi_override_options);
	ClassDB::bind_method(D_METHOD("get_structured_text_bidi_override_options"), &LineEdit::get_structured_text_bidi_override_options);
	ClassDB::bind_method(D_METHOD("set_placeholder", "text"), &LineEdit::set_placeholder);
	ClassDB::bind_method(D_METHOD("get_placeholder"), &LineEdit::get_placeholder);
	ClassDB::bind_method(D_METHOD("set_caret_column", "position"), &LineEdit::set_caret_column);
	ClassDB::bind_method(D_METHOD("get_caret_column"), &LineEdit::get_caret_column);