feat(dropdown): allow disabling menu options

[brc-dd]

resolves #306

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[codecov]

Codecov Report

Patch coverage: 100.00% and project coverage change: +0.01 🎉

Comparison is base (00b2e45) 83.56% compared to head (fafc8c1) 83.58%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #307      +/-   ##
==========================================
+ Coverage   83.56%   83.58%   +0.01%     
==========================================
  Files         123      123              
  Lines       10502    10512      +10     
  Branches      578      448     -130     
==========================================
+ Hits         8776     8786      +10     
  Misses       1726     1726              

Impacted Files	Coverage Δ
lib/components/SDropdownSectionMenu.vue	100.00% <100.00%> (ø)
lib/composables/Dropdown.ts	98.64% <100.00%> (+<0.01%)	⬆️

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