Touch UI additions, bug fixes (#17379)

Marlin/src/feature/bedlevel/ubl/ubl_G29.cpp

Marlin/src/feature/pause.cpp

Marlin/src/lcd/extui/lib/ftdi_eve_touch_ui/marlin_events.cpp

...d/extui/lib/ftdi_eve_touch_ui/screens/bed_mesh_screen.cpp

...src/lcd/extui/lib/ftdi_eve_touch_ui/screens/main_menu.cpp

...src/lcd/extui/lib/ftdi_eve_touch_ui/screens/screen_data.h

...n/src/lcd/extui/lib/ftdi_eve_touch_ui/screens/screens.cpp

Marlin/src/lcd/extui/lib/ftdi_eve_touch_ui/screens/screens.h

Marlin/src/lcd/extui/ui_api.cpp

Marlin/src/lcd/extui/ui_api.h

Marlin/src/lcd/extui_dgus_lcd.cpp

Marlin/src/lcd/extui_example.cpp

Marlin/src/lcd/language/language_en.h