api_thumbnails ValueError for e.g. ?project=123x

[will-moore]

Going to e.g. /gallery-api/thumbnails/?project=123x
will give an error below.

Probably just needs a fix to check ids are valid numbers:

+++ b/idr_gallery/views.py
@@ -253,6 +253,11 @@ def api_thumbnails(request, conn=None, **kwargs):
     image_ids = {}
     for obj_type, ids in zip(['project', 'screen'], [project_ids, screen_ids]):
         for obj_id in ids:
+            try:
+                int(obj_id)
+            except ValueError:
+                logger.debug("api_thumbnails Invalid object ID %s" % obj_id)
+                continue
             images = _get_study_images(conn, obj_type, obj_id,
                                        tag_text="Study Example Image")

See https://www.openmicroscopy.org/qa2/qa/feedback/41897/

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/omeroweb/decorators.py", line 597, in wrapper
context = f(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/idr_gallery/views.py", line 256, in api_thumbnails
images = _get_study_images(conn, obj_type, obj_id,

File "/opt/omero/web/venv3/lib64/python3.9/site-packages/idr_gallery/views.py", line 207, in _get_study_images
params.addId(obj_id)

File "/opt/omero/web/venv3/lib64/python3.9/site-packages/omero_sys_ParametersI.py", line 335, in addId
self.addLong("id", rlong(id))

File "/opt/omero/web/venv3/lib64/python3.9/site-packages/omero/rtypes.py", line 216, in rlong
return RLongI(val)

File "/opt/omero/web/venv3/lib64/python3.9/site-packages/omero/rtypes.py", line 553, in __init__
omero.RLong.__init__(self, int(value))

ValueError: invalid literal for int() with base 10: '1801"'