Fix on warning callback

[marco9663]

Description

• Added back the on_warning_callback feature to DbtTestLocalOperator caused by accidentally removal in c7a203a

• Added two test cases for when the on_warning_callback should be called and should not be called

Related Issue(s)

closes #549

Breaking Change?

None, just added back what should be there

Checklist

• I have made corresponding changes to the documentation (if required)
• I have added tests that prove my fix is effective or that my feature works

[netlify]

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🔨 Latest commit	e47dbb7
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[codecov]

Codecov Report

All modified lines are covered by tests ✅

Comparison is base (d70e6d7) 92.41% compared to head (e47dbb7) 92.80%.
Report is 3 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #557      +/-   ##
==========================================
+ Coverage   92.41%   92.80%   +0.38%     
==========================================
  Files          49       49              
  Lines        1952     1960       +8     
==========================================
+ Hits         1804     1819      +15     
+ Misses        148      141       -7     

Files	Coverage Δ
cosmos/operators/local.py	90.93% <100.00%> (+2.56%)	⬆️

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[tatiana]

We decided to merge the work and join the efforts in #558