since the widget by default has no strings in the designer ui file any
state change injects stuff in qlabels and changes the effective size hint.
to deal with this once and for all the three state changes now always
call a new adjustment helper.
the adjustment helper calls adjustSize iff the hintted dimensions are
larger than the effective one. this way we don't shrink the window
when the backtrace is reloaded, but always grow it if needed for the
backtraced state.
CHANGELOG: The Developer Information tab now correctly resizes to fit the content
FIXED-IN: 5.16.1
BUG: 406748