test: diff customheight to test

Author: diana-villalvazo-wgu

src/courseware/course/sequence/Unit/hooks/useIFrameBehavior.test.js

@@ -167,7 +167,7 @@ describe('useIFrameBehavior hook', () => {
         ]);
       });
       describe('resize message', () => {
-        const customHeight = 23;
+        const customHeight = 25;
         const resizeMessage = (height = 23) => ({
           data: { type: messageTypes.resize, payload: { height } },
         });