Grey Out Deprecated Courses In PreReq Tree

[EssWhyy]

Context

Implements #3473

Implementation

Connects ModuleTree.tsx to the Redux Store, and uses the getModuleCondensed() function to check if the module code in each node points to a valid module in the current module bank. If the module has been deprecated, we remove the hoverable color-${layer} classname tag from the module node. The node will be greyed out and no longer appear hoverable as shown below

UI Example:

Other Information

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Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 53.71%. Comparing base (1ec2b2b) to head (e156a0b).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #3647 +/- ## ========================================== + Coverage 53.69% 53.71% +0.02% ========================================== Files 272 272 Lines 5956 5959 +3 Branches 1417 1418 +1 ========================================== + Hits 3198 3201 +3 Misses 2758 2758 ```

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[yimqiy]

Ooh just saw this :) thanks for implementing!

Just a note - pre-reqs that are not individual courses to begin with are also greyed out, like the one below:

[kokrui]

@yimqiy thanks for the comment! I do think it makes sense to have different behaviour (i.e. don't just grey them out) for these non-course pre-req tree nodes -- let's track this as an issue