wxGUI: Fixed E722 in ii2t_gis_set.py

[arohanajit]

Fixed E722: bare 'except' in iit2t_gis_set.py. Added general catchall Exception for cases with multiple errors. Other were mostly OSError and shutil.Error. Also print error message in the error notification

[echoix]

Was the branch too outdated yet?

[arohanajit]

Yeah, even though I cloned a fresh copy this morning. Normally I try to update the branch when reqd so that PR are in line with the latest version

[echoix]

But if there aren't potential semantic conflicts, or not too outdated (new enforcements, similar files changed), it doesn't matter to be a couple commits out of date. Each push is about 1h of CI x 20 runners, shared between all OSGeo projects.

[arohanajit]

Oh ok, got it. I do this to avoid any potential merge conflicts but will let it be in the future