Fix autofilling of screens in Navigation Tab widgets on the index.bob

[OCopping]

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[codecov]

Codecov Report

❌ Patch coverage is 79.24528% with 22 lines in your changes missing coverage. Please review.
✅ Project coverage is 93.87%. Comparing base (a0932ec) to head (1803101).

Files with missing lines	Patch %	Lines
src/techui_builder/autofill.py	57.69%	22 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #267      +/-   ##
==========================================
- Coverage   96.04%   93.87%   -2.18%     
==========================================
  Files          13       13              
  Lines         986     1028      +42     
==========================================
+ Hits          947      965      +18     
- Misses         39       63      +24     

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