TICS: Improve compiler warning scores

[britneywwc]

Done

• Address compiler warnings for JS files under /static/js/
• Majority of the change is adding type associations for variables. Minor changes made to the functionalities.
• Initial Compiler Warning score: 13.53%
• Initial static file Compiler Warning score: 10.09%
• Final Compiler Warning score: 43.38%
• Final static file Compiler Warning score: 34.83%

QA

• Go to demos
• Check that JS functionalities are working
• Go to nav, click on careers and see that roles are showing as expected
• Go to TiCS dashboard, compare the updated Compiler Warning score with the screenshot below

Issue / Card

Fixes WD-32027

Screenshots

Before changes

[webteam-app]

Demo

Jenkins

demos.haus

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 79.08%. Comparing base (25ca88a) to head (f3c4765).
⚠️ Report is 10 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2248      +/-   ##
==========================================
+ Coverage   78.88%   79.08%   +0.20%     
==========================================
  Files          16       16              
  Lines        1804     1822      +18     
==========================================
+ Hits         1423     1441      +18     
  Misses        381      381              

Flag	Coverage Δ
python	79.08% <ø> (+0.20%)	⬆️

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