[FLINK-37856] Rename testGetJsonPlanWithHints to testSourceTableWithHints

Make it obvious that this is about hints in sources.

Author: AHeise

flink-table/flink-table-planner/src/test/java/org/apache/flink/table/api/CompiledPlanITCase.java

@@ -96,7 +96,7 @@ void testSourceTableWithHints() {
                                 // compiled plan
                                 + " /*+ OPTIONS('bounded'='true', 'scan.parallelism'='2') */");
 
-        String expected = TableTestUtil.readFromResource("/jsonplan/testGetJsonPlanWithHints.out");
+        String expected = TableTestUtil.readFromResource("/jsonplan/testSourceTableWithHints.out");
         assertThat(getPreparedToCompareCompiledPlan(compiledPlan.asJsonString()))
                 .isEqualTo(expected);
     }