Use correct @*Res annotation for updateStatusIcon()

There was a small mistake in my previous CL [1].

What updateStatusIcon() takes is a resource ID for Drawable, not ID
for an integer value.

These @*Res annotations are still just hints for IDE and lint tools.
They are actually all @Retention(SOURCE) hence this kind of mistake
has no impact at run time actually.

This CL also adds the right annotation for corresponding methods in
InputMethodManager and InputMethodManagerService.

 [1]: I995c4b922f91b94438c1292392b2c3030598594f
      c7ca3684

Bug: 114418674
Test: atest CtsInputMethodTestCases CtsInputMethodServiceHostTestCases
Change-Id: Id7fd610c07643c79b8ec03efbda24b3dc0686844