(test):Adding some test coverage for form-helper functions (openmrs#332)

* (test):Adding some test coverage for form-helper functions

* Update src/utils/form-helper.test.ts

* deletes unecessary test

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Co-authored-by: Brandon Istenes <brandonesbox@gmail.com>
Co-authored-by: Pius Rubangakene <piruville@gmail.com>