[Snowflake] Handle cases when stream source is not retrievable (#23245)

(cherry picked from commit d926ed9dad2f500dd3bd3607aa00d09d39014ae3)

ingestion/src/metadata/ingestion/source/database/snowflake/metadata.py

@@ -898,6 +898,8 @@ class SnowflakeSource(
         """
         Get columns of table/view/stream
         """
+        # For streams, we will use source table/view's columns
+        # since stream does not define columns separately in Snowflake
         if table_type == TableType.Stream:
             cursor = self.connection.execute(
                 SNOWFLAKE_GET_STREAM.format(stream_name=table_name, schema=schema_name)
@@ -906,6 +908,13 @@ class SnowflakeSource(
                 result = cursor.fetchone()
                 if result:
                     table_name = result[6].split(".")[-1]
+                    # Can't fetch source of stream is source is dropped or no priviledge
+                    if table_name == "No privilege or table dropped":
+                        logger.debug(
+                            f"Couldn't fetch columns of stream [{result and result[1]}],"
+                            f" due to error on source: {table_name}. Result: {result}"
+                        )
+                        return []
             except Exception:
                 pass