Add more bailouts for raw types

[msridhar]

Fixes #1151

The extra check in CheckIdenticalNullabilityVisitor is not needed to fix this bug but seemed like a prudent addition.

[codecov]

Codecov Report

Attention: Patch coverage is 66.66667% with 1 line in your changes missing coverage. Please review.

Project coverage is 88.14%. Comparing base (0888040) to head (4c4890a).

Files with missing lines	Patch %	Lines
...way/generics/CheckIdenticalNullabilityVisitor.java	0.00%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #1153      +/-   ##
============================================
- Coverage     88.15%   88.14%   -0.02%     
- Complexity     2281     2282       +1     
============================================
  Files            87       87              
  Lines          7455     7457       +2     
  Branches       1490     1491       +1     
============================================
+ Hits           6572     6573       +1     
  Misses          445      445              
- Partials        438      439       +1     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.