feat: restrict deletion of the primary menu

[ruibaby]

What type of PR is this?

/area ui
/kind improvement
/milestone 2.17.x

What this PR does / why we need it:

添加对菜单的限制，不能删除已经设置为主菜单的菜单。

Which issue(s) this PR fixes:

Fixes #4956

Does this PR introduce a user-facing change?

添加对菜单的限制，不能删除已经设置为主菜单的菜单。

[guqing]

/lgtm

[f2c-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: guqing

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Needs approval from an approver in each of these files:

• ui/OWNERS [guqing]

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 57.06%. Comparing base (bc10336) to head (26e0bf6).
Report is 26 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #6203      +/-   ##
============================================
+ Coverage     54.51%   57.06%   +2.55%     
- Complexity     3523     3717     +194     
============================================
  Files           646      651       +5     
  Lines         21862    22041     +179     
  Branches       1528     1542      +14     
============================================
+ Hits          11917    12577     +660     
+ Misses         9328     8858     -470     
+ Partials        617      606      -11     

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