Fix compile error with the usage of List.of

Author: allenkim0129

sdk/cosmos/azure-cosmos-tests/src/test/java/com/azure/cosmos/rx/VectorIndexTest.java

@@ -80,7 +80,7 @@ public void afterClass() {
 
     @Test(groups = {"emulator"}, timeOut = TIMEOUT*10000)
     public void shouldCreateVectorEmbeddingPolicy() {
-        ArrayList<String> paths = new ArrayList<>(List.of("/mypk"));
+        ArrayList<String> paths = new ArrayList<>(Arrays.asList("/mypk"));
         PartitionKeyDefinition partitionKeyDef = new PartitionKeyDefinition()
             .setPaths(paths);