bugfix: Fix wildcard issue

[codekeyz]

Description

Use last wildcard found along route when no matched route.

Type of Change

• ✨ New feature (non-breaking change which adds functionality)
• 🛠️ Bug fix (non-breaking change which fixes an issue)
• ❌ Breaking change (fix or feature that would cause existing functionality to change)
• 🧹 Code refactor
• ✅ Build configuration change
• 📝 Documentation
• 🗑️ Chore

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 76.19048% with 5 lines in your changes are missing coverage. Please review.

Project coverage is 74.44%. Comparing base (d33c5c1) to head (41c11d7).

Files	Patch %	Lines
packages/spanner/lib/src/tree/tree.dart	75.00%	4 Missing ⚠️
packages/spanner/lib/src/tree/node.dart	80.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #118      +/-   ##
==========================================
- Coverage   75.06%   74.44%   -0.63%     
==========================================
  Files          34       34              
  Lines        1115     1119       +4     
==========================================
- Hits          837      833       -4     
- Misses        278      286       +8     

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