test: Added unit tests for UseTextAreaInternal hook (#133)

[RAVEYUS]

Description

Please include a brief summary of the change and include the relevant issue(s).

Closes #133

What change does this PR introduce?

Added unit tests for UseTextAreaInternal hook

Please select the relevant option(s).

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation update (changes to docs/code comments)
• [✅] Test Cases

What is the proposed approach?

I was able to implement the test cases for the hook, however I was unable to generate accurate tests for toggle functions inside the hook, other than this everything seems to pass

Checklist:

• [✅] The commit message follows our adopted guidelines
• [✅] Testing has been done for the change(s) added (for bug fixes/features)
• [✅ ] Relevant comments/docs have been added/updated (for bug fixes/features)

[tjtanjin]

LGTM!