[ci] Add filter to teams (#11455)

This improves the parsing to avoid issues like in #11454

commit-id:53a06ab3

Co-authored-by: driazati <[email protected]>

Author: driazati

tests/python/ci/test_ci.py

@@ -511,6 +511,7 @@ def run(type, data, check):
         """
         comment2 = """
         something @person4
+        @person5
         """
         teams = {
             "data": {
@@ -731,6 +732,20 @@ def run(type, data, check):
         check="Dry run, would have updated issues/1234 with {'body': '@person2 @SOME1-ONE-\\n\\ncc @person1'}",
     )
 
+    run(
+        type="ISSUE",
+        data={
+            "title": "[] A title",
+            "number": 1234,
+            "user": {
+                "login": "person5",
+            },
+            "labels": [],
+            "body": "@person2 @SOME1-ONE-",
+        },
+        check="No one to cc, exiting",
+    )
+
 
 if __name__ == "__main__":
     tvm.testing.main()

tests/scripts/github_tag_teams.py

@@ -122,7 +122,7 @@ def add_tag(tag, users):
     for tag in result:
         result[tag] = list(set(result[tag]))
 
-    return {k.lower(): v for k, v in result.items()}
+    return {k.lower(): v for k, v in result.items() if k.strip()}
 
 
 def tags_from_title(title: str) -> List[str]: