this is something which was never ever working before. However, while
fixing the 24h mode, it also appeared that the theming was applied in
the wrong spot, which resulted in signals beeing called on a not yet
themed object, so the theming was also fixed. (Which is the theme_apply
change).
To sum up:
- The theme is now applied by efl_ui_layout_base
- the range is now correct for 24h mode
- There is a quite major problem with the theme, see T8546
- As a quick fix, am / pm button can be disabled.
ref T8546
Differential Revision: https://phab.enlightenment.org/D11004
