fix(tooltip): tooltip type warning due to incorrect use of oneOf

[Coread]

Description

Small fix to correct the expected type for the react tooltip component tooltip prop

Related Issue

#788

Motivation and Context

How Has This Been Tested?

Types of changes

• 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 change)
• Documentation update
• Code style update (formatting, local variables)
• Refactoring (no functional changes, no api changes)
• Build related changes
• CI related changes
• Other... Please describe:

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.

[robstax]

not sure why this PR won't run any checks... i'd like to get this in, the warning logs are quite annoying

[codecov]

Codecov Report

Merging #789 (856f79b) into master (c88cf09) will decrease coverage by 0.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #789      +/-   ##
==========================================
- Coverage   94.14%   94.13%   -0.02%     
==========================================
  Files         125      125              
  Lines       14657    14657              
  Branches     2155     2157       +2     
==========================================
- Hits        13799    13797       -2     
- Misses        858      860       +2     

Impacted Files	Coverage Δ
web-components/src/components/icon/Icon.ts	78.57% <0.00%> (-4.17%)	⬇️
web-components/src/components/button/Button.ts	79.22% <0.00%> (+0.27%)	⬆️
web-components/src/components/menu/MenuItem.ts	98.75% <0.00%> (+1.25%)	⬆️
web-components/src/components/label/Label.ts	100.00% <0.00%> (+2.22%)	⬆️

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