Fix program number parsing for some models

[ofalvai]

Fixes #38

[github-actions]

🎉 HACS repository validator action summary 🎉
✅ The repository is not archived
✅ manifest.json file exist
✅ All required keys are present in manifest.json
✅ hacs.json has the 'name' key set
✅ The repository has a description
✅ candy is added to https://github.com/home-assistant/brands NICE!
✅ The repository has topics
✅ The repository has issues enabled
✅ This day ends with an 'y' (Monday)
✅ README.md exists
✅ Requirements validation
✅ HACS load check

[codecov]

Codecov Report

Merging #39 (6e67dce) into main (e82dd7d) will increase coverage by 0.17%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main      #39      +/-   ##
==========================================
+ Coverage   88.52%   88.69%   +0.17%     
==========================================
  Files           6        6              
  Lines         584      584              
==========================================
+ Hits          517      518       +1     
+ Misses         67       66       -1     

Impacted Files	Coverage Δ
custom_components/candy/client/model.py	80.72% <ø> (+0.52%)	⬆️

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