[Task] Add unit test cases for useToastsInternal hook

[tjtanjin]

Task Description:
Currently, we run unit tests using jest which can be found here.

However, the test cases are not yet comprehensive enough and work can be done to cover more grounds. Specifically for this issue, we hope to add test cases for the useToastsInternal hook.

Deliverable(s):
New unit test cases that cover the testing of the useToastsInternal hook.

Additional Context:

• Hooks API can be found here
• Existing unit test for hooks can be found here which may serve as a good source for reference.

[manoshatzi]

I want to give it a try to this one.

[tjtanjin]

I want to give it a try to this one.

Go for it!

[tjtanjin]

Hey @manoshatzi! Checking in to see if you're facing any problems working on the issue. Feel free to reach out!