fix: Apply same viewer context subclass type mechanism to knexLoader and related methods

[wschurman]

Why

When these were installed extension functions, we could get away without the TMViewerContext2 technique. But now that these are loader methods on the PostgresEntity subclass, we need this again (it's the same as Entity and ReadonlyEntity).

This type allows the typechecker to behave correctly when a subclass of ViewerContext is used.

How

Add generic the same as ReadonlyEntity/Entity.

Test Plan

yarn tsc in application that uses ViewerContext subclass and knexLoader.

[wschurman]

• fix: correct pagination behavior for standard pagination with descending ordering clauses #477
• fix: correct precedence parentheses for SQLFragment joins #476
• feat: add method to get pagination cursor for single entity #475
• fix: correct discriminated union type for forward/backward pagination #474
• feat: support nullable search fields with postgres transforms #470
• fix: Apply same viewer context subclass type mechanism to knexLoader and related methods #472 👈 (View in Graphite)
• main

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (c60f4cd) to head (fa3ac1e).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##              main      #472   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          110       110           
  Lines        16036     16041    +5     
  Branches      1439      1439           
=========================================
+ Hits         16036     16041    +5     

Flag	Coverage Δ
integration	23.42% <100.00%> (+0.02%)	⬆️
unittest	95.08% <100.00%> (+<0.01%)	⬆️

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[wschurman]

Merge activity

• Feb 27, 2:15 AM UTC: A user started a stack merge that includes this pull request via Graphite.
• Feb 27, 2:15 AM UTC: @wschurman merged this pull request with Graphite.