Improve wildcard mismatch diagnostics for identical-looking types

[msridhar]

No description provided.

[msridhar]

This change is part of the following stack:

• Better support for conditional expressions in JSpecify mode #1608
  • Improve wildcard mismatch diagnostics for identical-looking types #1627 ◀

_{Change managed by git-spice.}

[codecov]

Codecov Report

❌ Patch coverage is 56.41026% with 17 lines in your changes missing coverage. Please review.
✅ Project coverage is 88.06%. Comparing base (7e0c16b) to head (415384d).

Files with missing lines	Patch %	Lines
...ava/com/uber/nullaway/generics/GenericsChecks.java	56.41%	6 Missing and 11 partials ⚠️

Additional details and impacted files

@@                           Coverage Diff                            @@
##             jspecify-conditional-expr-wildcard    #1627      +/-   ##
========================================================================
- Coverage                                 88.17%   88.06%   -0.12%     
- Complexity                                 3071     3077       +6     
========================================================================
  Files                                       105      105              
  Lines                                     10286    10324      +38     
  Branches                                   2083     2095      +12     
========================================================================
+ Hits                                       9070     9092      +22     
- Misses                                      575      580       +5     
- Partials                                    641      652      +11     

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