Fix TA mode for lecture lessons

[leslieyip02]

Context

Fixes #3929.

Implementation

Previously, TA mode will filter out all lectures. However, some mods (e.g. CS2103T) only have lecture lessons, so this PR makes all lessons togglable.

TaModulesConfig now stores [lessonType, classNo, startTime, day] instead of [lessonType, classNo].

export type TaModulesConfig = {
  [moduleCode: ModuleCode]: [
    lessonType: LessonType,
    classNo: ClassNo,
    startTime: StartTime,
    day: DayText,
  ][];
};

For the migration, I'm not sure on how startTime and day data can be pulled. Right now, I am wiping the existing TA config to avoid conflicts. Let me know if there's a better way to do this?

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Name	Status	Preview	Comments	Updated (UTC)
nusmods-export	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Jan 3, 2025 2:31pm

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Codecov Report

Attention: Patch coverage is 35.84906% with 34 lines in your changes missing coverage. Please review.

Project coverage is 54.68%. Comparing base (988c6fd) to head (e56d83f). Report is 59 commits behind head on master.

Files with missing lines	Patch %	Lines
website/src/views/timetable/TimetableContent.tsx	0.00%	22 Missing :warning:
website/src/utils/timetables.ts	62.50%	6 Missing :warning:
website/src/reducers/timetables.ts	55.55%	4 Missing :warning:
website/src/views/timetable/TimetableCell.tsx	66.66%	2 Missing :warning:

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #3930      +/-   ##
==========================================
+ Coverage   54.52%   54.68%   +0.16%     
==========================================
  Files         274      276       +2     
  Lines        6076     6327     +251     
  Branches     1455     1548      +93     
==========================================
+ Hits         3313     3460     +147     
- Misses       2763     2867     +104     

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