Support @MonotonicNonNull on static fields

[msridhar]

Fixes #1160

Add more tests for other cases also

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 88.20%. Comparing base (0161a80) to head (fe0afd5).
Report is 1 commits behind head on master.

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #1166      +/-   ##
============================================
+ Coverage     88.17%   88.20%   +0.02%     
- Complexity     2305     2309       +4     
============================================
  Files            88       88              
  Lines          7536     7536              
  Branches       1506     1507       +1     
============================================
+ Hits           6645     6647       +2     
+ Misses          448      446       -2     
  Partials        443      443              

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