avoid error if access results key is not found for erasures

in cases where connector is disabled, there won't be an entry
in the acces results for that connector's key.
instead of throwing a key error, we instead just pass in an empty list
to the erasure execution, which will not actually execute anyway.

src/fides/api/ops/task/graph_task.py

@@ -726,12 +726,14 @@ def termination_fn(*dependent_values: int) -> Tuple[int, ...]:
                 t.erasure_request,
                 access_request_data[
                     str(k)
-                ],  # Pass in the results of the access request for this collection
-                *[
-                    access_request_data[
-                        str(upstream_key)
-                    ]  # Additionally pass in the original input data we used for the access request. It's helpful in
+                ]  # Pass in the results of the access request for this collection
+                if str(k) in access_request_data
+                else [],  # handle case with no read entry, i.e. disabled connector
+                *[ # Additionally pass in the original input data we used for the access request. It's helpful in
                     # cases like the EmailConnector where the access request doesn't actually retrieve data.
+                    access_request_data[str(upstream_key)]
+                    if str(upstream_key) in access_request_data
+                    else []  # handle case with no read entry, i.e. disabled connector
                     for upstream_key in t.input_keys
                 ],
             )