### 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.
float rows = p_pos.y;
	rows -= style_normal->get_margin(SIDE_TOP);
	rows /= (minimap_char_size.y + minimap_line_spacing);
	rows += _get_v_scroll_offset();
	
	int minimap_visible_lines = get_minimap_visible_lines();
	int visible_rows = get_visible_line_count() + 1;
	int first_vis_line = get_first_visible_line() - 1;
	int draw_amount = visible_rows + (smooth_scroll_enabled ? 1 : 0);
	draw_amount += get_line_wrap_count(first_vis_line + 1);
	int minimap_line_height = (minimap_char_size.y + minimap_line_spacing);