tabId prop is no longer required

[Jialecl]

Checklist
(Check off all the items before submitting)

• Build process is done without errors. All tests pass in the /lib directory.
• Self-reviewed the code before submitting.
• Meets accessibility standards.
• Added/updated documentation to /website as needed.
• Added/updated tests as needed.

Purpose
To avoid creating a breaking change for now we will default the tabId value to the label if this one is set.

[Mil4n0r]

Looks good to me. However, can you do a change in the stories so that we have both an example of top/left icon position with text and another one with no text? (instead of replacing it like you have done). That way we canmake sure that we are covering all scenarios.

[Jialecl]

Looks good to me. However, can you do a change in the stories so that we have both an example of top/left icon position with text and another one with no text? (instead of replacing it like you have done). That way we canmake sure that we are covering all scenarios.

We do have already a few examples with icon and label with iconPosition top and left.
But I added them just in case since some of those cases have notification number.