### 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.
}
#endif
	mouse_monitor = SetWindowsHookEx(WH_MOUSE, ::MouseProc, nullptr, GetCurrentThreadId());
	Point2i window_position;
	if (p_position != nullptr) {
		window_position = *p_position;
	} else {
		if (p_screen == SCREEN_OF_MAIN_WINDOW) {
			p_screen = SCREEN_PRIMARY;
		}
		window_position = screen_get_position(p_screen) + (screen_get_size(p_screen) - p_resolution) / 2;
	}
	WindowID main_window = _create_window(p_mode, p_vsync_mode, 0, Rect2i(window_position, p_resolution));
	ERR_FAIL_COND_MSG(main_window == INVALID_WINDOW_ID, "Failed to create main window.");
	joypad = new JoypadWindows(&windows[MAIN_WINDOW_ID].hWnd);
	for (int i = 0; i < WINDOW_FLAG_MAX; i++) {
		if (p_flags & (1 << i)) {
			window_set_flag(WindowFlags(i), true, main_window);
		}
	}
	show_window(MAIN_WINDOW_ID);
#if defined(VULKAN_ENABLED)
	if (rendering_driver == "vulkan") {
		rendering_device_vulkan = memnew(RenderingDeviceVulkan);
		rendering_device_vulkan->initialize(context_vulkan);
		RendererCompositorRD::make_current();
	}
#endif
	if (!Engine::get_singleton()->is_editor_hint() && !OS::get_singleton()->is_in_low_processor_usage_mode()) {