fix(app): bug fixes in EnhancedPageObject

[mohit-nagaraj]

Thanks in advance for your contribution. Please follow the below steps in submitting a pull request, as it will help us with reviewing it quicker.
FIxes: #3903 issue

• Before marking your PR for review, please test and verify your changes by making appropriate modifications to any of the Nightwatch example tests (present in examples/tests directory of the project) and running them. ecosia.js and duckDuckGo.js are good examples to work with.
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• If your change is based on existing functionality please consider refactoring first. Pull requests that duplicate code will most likely be ignored;
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• Always add unit tests - PRs without tests are most of the times ignored.

[CLAassistant]

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