fix(academic_path): show the right UC occurence

[SIMAOMARTA]

Closes #1698

To reduce the possibility that, when selecting a course unit in the schedule, the user is not taken to the correct occurrence of that course unit, the occurrences are first sorted by year in order to obtain the most recent occurrence.

Review checklist

• Terms and conditions reflect the changes

View Changes

• Description has screenshots of the UI changes.
• Tested both in light and dark mode.
• New text is both in portuguese (PT) and english (EN).
• Works in different text zoom levels.
• Works in different screen sizes.

Performance

• No helper functions to return widgets are added. New widgets are created instead.
• Used ListView.builder for Long Lists.
• Controllers (TextEditingController, ...) are beeing disposed of in dispose() method.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 60%. Comparing base (6c970af) to head (5178fab).
⚠️ Report is 1 commits behind head on develop.

❌ Your project check has failed because the head coverage (60%) is below the target coverage (70%). You can increase the head coverage or adjust the target coverage.

Additional details and impacted files

@@           Coverage Diff           @@
##           develop   #1764   +/-   ##
=======================================
  Coverage       60%     60%           
=======================================
  Files            2       2           
  Lines           81      81           
=======================================
  Hits            48      48           
  Misses          33      33           

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