Save channel names to all Orphaned Images

[will-moore]

Reported at https://www.openmicroscopy.org/qa2/qa/feedback/41931/

"Save to all" for channel names should probably be disabled for Orphaned imgaes.

Traceback (most recent call last):

File "/opt/omero/web/venv3/lib64/python3.9/site-packages/django/core/handlers/exception.py", line 55, in inner
response = get_response(request)

File "/opt/omero/web/venv3/lib64/python3.9/site-packages/django/core/handlers/base.py", line 197, in _get_response
response = wrapped_callback(request, *callback_args, **callback_kwargs)

File "/opt/omero/web/venv3/lib64/python3.9/site-packages/django/views/decorators/http.py", line 43, in inner
return func(request, *args, **kwargs)

File "/opt/omero/web/venv3/lib64/python3.9/site-packages/omeroweb/decorators.py", line 538, in wrapped
retval = f(request, *args, **kwargs)

File "/opt/omero/web/venv3/lib64/python3.9/site-packages/omeroweb/decorators.py", line 597, in wrapper
context = f(request, *args, **kwargs)

File "/opt/omero/web/venv3/lib64/python3.9/site-packages/omeroweb/webclient/views.py", line 2863, in edit_channel_names
pid = int(parentId.split("-")[1])

IndexError: list index out of range