Move queries within testCommentViewColumn for consistency

See the change in previous commit.

Author: hashhar

testing/trino-testing/src/main/java/io/trino/testing/BaseConnectorTest.java

@@ -3729,17 +3729,17 @@ public void testCommentViewColumn()
             assertUpdate("COMMENT ON COLUMN " + view.getName() + "." + viewColumnName + " IS 'new region key comment'");
             assertThat(getColumnComment(view.getName(), viewColumnName)).isEqualTo("new region key comment");
 
-            // comment updated
+            // comment deleted
+            assertUpdate("COMMENT ON COLUMN " + view.getName() + "." + viewColumnName + " IS NULL");
+            assertThat(getColumnComment(view.getName(), viewColumnName)).isEqualTo(null);
+
+            // comment set to non-empty value before verifying setting empty comment
             assertUpdate("COMMENT ON COLUMN " + view.getName() + "." + viewColumnName + " IS 'updated region key comment'");
             assertThat(getColumnComment(view.getName(), viewColumnName)).isEqualTo("updated region key comment");
 
             // comment set to empty
             assertUpdate("COMMENT ON COLUMN " + view.getName() + "." + viewColumnName + " IS ''");
             assertThat(getColumnComment(view.getName(), viewColumnName)).isEqualTo("");
-
-            // comment deleted
-            assertUpdate("COMMENT ON COLUMN " + view.getName() + "." + viewColumnName + " IS NULL");
-            assertThat(getColumnComment(view.getName(), viewColumnName)).isEqualTo(null);
         }
     }