### 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.
RtlGetVersion(&os_ver);
		}
		FreeLibrary(nt_lib);
	}
	
	HMODULE ux_theme_lib = LoadLibraryW(L"uxtheme.dll");
	if (ux_theme_lib) {
		ShouldAppsUseDarkMode = (ShouldAppsUseDarkModePtr)GetProcAddress(ux_theme_lib, MAKEINTRESOURCEA(132));
		GetImmersiveColorFromColorSetEx = (GetImmersiveColorFromColorSetExPtr)GetProcAddress(ux_theme_lib, MAKEINTRESOURCEA(95));
		GetImmersiveColorTypeFromName = (GetImmersiveColorTypeFromNamePtr)GetProcAddress(ux_theme_lib, MAKEINTRESOURCEA(96));
		GetImmersiveUserColorSetPreference = (GetImmersiveUserColorSetPreferencePtr)GetProcAddress(ux_theme_lib, MAKEINTRESOURCEA(98));
		ux_theme_available = ShouldAppsUseDarkMode && GetImmersiveColorFromColorSetEx && GetImmersiveColorTypeFromName && GetImmersiveUserColorSetPreference;
		if (os_ver.dwBuildNumber >= 22000) {
			dark_title_available = true;
		}
	}
	
	HMODULE wintab_lib = LoadLibraryW(L"wintab32.dll");
	if (wintab_lib) {
		wintab_WTOpen = (WTOpenPtr)GetProcAddress(wintab_lib, "WTOpenW");
		wintab_WTClose = (WTClosePtr)GetProcAddress(wintab_lib, "WTClose");
		wintab_WTInfo = (WTInfoPtr)GetProcAddress(wintab_lib, "WTInfoW");
		wintab_WTPacket = (WTPacketPtr)GetProcAddress(wintab_lib, "WTPacket");
		wintab_WTEnable = (WTEnablePtr)GetProcAddress(wintab_lib, "WTEnable");
		wintab_available = wintab_WTOpen && wintab_WTClose && wintab_WTInfo && wintab_WTPacket && wintab_WTEnable;
	}
	if (wintab_available) {
		tablet_drivers.push_back("wintab");
	}