Append query to the queries sent to dataproc instead of replacing

Requested by reviewer, instead of adding a function that sets a list of queries, just fix the original function add_query that will actually append query to the queries list send to dataproc job.

providers/src/airflow/providers/google/cloud/hooks/dataproc.py

@@ -118,19 +118,11 @@ def add_args(self, args: list[str] | None = None) -> None:
 
     def add_query(self, query: str) -> None:
         """
-        Set query for Dataproc job.
+        Add query for Dataproc job.
 
         :param query: query for the job.
         """
-        self.job["job"][self.job_type]["query_list"] = {"queries": [query]}
-
-    def set_queries(self, queries: list[str]) -> None:
-        """
-        Set queries for Dataproc job.
-
-        :param queries: queries for the job.
-        """
-        self.job["job"][self.job_type]["query_list"] = {"queries": queries}
+        self.job["job"][self.job_type].setdefault("query_list", {"queries": []})["queries"].append(query)
 
     def add_query_uri(self, query_uri: str) -> None:
         """

providers/tests/google/cloud/hooks/test_dataproc.py

@@ -1097,14 +1097,11 @@ def test_add_args(self):
         assert args == self.builder.job["job"][self.job_type]["args"]
 
     def test_add_query(self):
-        query = ["query"]
-        self.builder.add_query(query)
-        assert self.builder.job["job"][self.job_type]["query_list"] == {"queries": [query]}
-
-    def test_set_queries(self):
-        queries = ["query1", "query2"]
-        self.builder.set_queries(queries)
-        assert self.builder.job["job"][self.job_type]["query_list"] == {"queries": queries}
+        query1 = "query1"
+        self.builder.add_query(query1)
+        query2 = "query2"
+        self.builder.add_query(query2)
+        assert self.builder.job["job"][self.job_type]["query_list"] == {"queries": [query1, query2]}
 
     def test_add_query_uri(self):
         query_uri = "query_uri"