feat(comp:menu): type of MenuItem is optional

[danranVm]

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Please check if your PR fulfills the following requirements:

• The commit message follows our guidelines
• Tests for the changes have been added/updated or not needed
• Docs and demo have been added/updated or not needed

PR Type

What kind of change does this PR introduce?

• Bugfix
• Feature
• Component style update
• Code style update (formatting, local variables)
• Refactoring (no functional changes, no api changes)
• Build related changes
• CI related changes
• Documentation content changes
• Application (the showcase website) / infrastructure changes
• Other... Please describe:

What is the current behavior?

What is the new behavior?

Other information

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[codecov]

Codecov Report

Merging #712 (05ec0ea) into main (71185fc) will increase coverage by 0.00%.
The diff coverage is 92.85%.

❗ Current head 05ec0ea differs from pull request most recent head f017559. Consider uploading reports for the commit f017559 to get more accurate results

@@           Coverage Diff           @@
##             main     #712   +/-   ##
=======================================
  Coverage   85.34%   85.35%           
=======================================
  Files         396      396           
  Lines        9945     9947    +2     
  Branches     2298     2304    +6     
=======================================
+ Hits         8488     8490    +2     
  Misses       1457     1457           

Impacted Files	Coverage Δ
packages/components/menu/src/Menu.tsx	100.00% <ø> (ø)
...kages/components/menu/src/contents/MenuDivider.tsx	100.00% <ø> (ø)
...ges/components/menu/src/contents/MenuItemGroup.tsx	91.66% <ø> (ø)
...nents/menu/src/contents/menu-sub/InlineContent.tsx	100.00% <ø> (ø)
.../components/menu/src/contents/menu-sub/MenuSub.tsx	96.96% <ø> (ø)
...ents/menu/src/contents/menu-sub/OverlayContent.tsx	6.66% <ø> (ø)
packages/components/menu/src/token.ts	100.00% <ø> (ø)
packages/components/menu/src/types.ts	100.00% <ø> (ø)
...es/components/menu/src/contents/menu-sub/Title.tsx	91.66% <85.71%> (ø)
packages/components/menu/src/contents/MenuItem.tsx	97.05% <100.00%> (ø)
... and 1 more

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