fix: comply with the changes to `winmd`

[halildurmus]

Description

Related Issue

Type of Change

• [ ] ✨ feat -- New feature (non-breaking change which adds functionality)
• [x] 🛠️ fix -- Bug fix (non-breaking change which fixes an issue)
• [ ] ❌ ! -- Breaking change (fix or feature that would cause existing functionality to change)
• [ ] 🧹 refactor -- Code refactor
• [ ] ✅ ci -- Build configuration change
• [ ] 📝 docs -- Documentation
• [ ] 🧪 test -- Test
• [ ] 🗑️ chore -- Chore

[codecov[bot]]

Codecov Report

Merging #372 (c6b595a) into main (67e64c9) will increase coverage by 0.02%. The diff coverage is 100.00%.

:exclamation: Current head c6b595a differs from pull request most recent head 72ac578. Consider uploading reports for the commit 72ac578 to get more accurate results

@@            Coverage Diff             @@
##             main     #372      +/-   ##
==========================================
+ Coverage   92.97%   92.99%   +0.02%     
==========================================
  Files          85       85              
  Lines        4113     4125      +12     
==========================================
+ Hits         3824     3836      +12     
  Misses        289      289              

Files Changed	Coverage Δ
...es/winrtgen/lib/src/models/namespace_analyzer.dart	100.00% <100.00%> (ø)
.../winrtgen/lib/src/models/winrt_metadata_store.dart	100.00% <100.00%> (ø)

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