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 88.15%. Comparing base (baf8f77) to head (3304fff).
Report is 1 commits behind head on master.

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     88.16%   88.15%   -0.02%     
- Complexity     2281     2282       +1     
============================================
  Files            87       87              
  Lines          7461     7463       +2     
  Branches       1491     1492       +1     
============================================
+ Hits           6578     6579       +1     
  Misses          445      445              
- Partials        438      439       +1     

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