fix: Allow Sentry failures when SENTRY_ALLOW_FAILURE is set in the Sentry CLI

[DanielMcAssey]

This PR adds support for SENTRY_ALLOW_FAILURE.
This fixes #4849

## Unreleased

### Fixes

- Allow Sentry failures when SENTRY_ALLOW_FAILURE is set (#4852)

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 73.80%. Comparing base (ad83c58) to head (8e67b15).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #4852   +/-   ##
=======================================
  Coverage   73.80%   73.80%           
=======================================
  Files         483      483           
  Lines       17551    17551           
  Branches     3461     3461           
=======================================
+ Hits        12953    12954    +1     
+ Misses       3746     3745    -1     
  Partials      852      852           

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[jamescrosswell]

Thanks for the PR @DanielMcAssey !

I had a quick look at it. From what I can tell, I think the new property would need to be used in a couple of extra places for this to have the desired effect... but maybe I'm not seeing something obvious.

[DanielMcAssey]

During testing, I was not getting build failures, until it hit the propose version command. Its because everywhere else has IgnoreExitCode="true" ContinueOnError="WarnAndContinue"