fix: Pass props to multi targeting

[xC0dex]

Pull Request

The issue or feature being addressed

This PR fixes #2706 by passing the defined Swashbuckle.AspNetCore.props file to the buildMultiTargeting directory, which is used for outer builds (Multi targeting).

Details on the issue fix or feature implementation

The props file defines that the OpenApiGenerateDocumentsOnBuild property is false by default if it's not set. However, this was not set for multi targeting projects. So the document was generated during the build.

[martincostello]

I guess there's not an easy way to add a test for this, right?

[codecov-commenter]

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Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 90.50%. Comparing base (d11913e) to head (0e7b686).
Report is 6 commits behind head on master.

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Additional details and impacted files

@@           Coverage Diff           @@
##           master    #3107   +/-   ##
=======================================
  Coverage   90.50%   90.50%           
=======================================
  Files          76       76           
  Lines        3116     3116           
  Branches      515      515           
=======================================
  Hits         2820     2820           
  Misses        296      296           

Flag	Coverage Δ
Linux	90.50% <ø> (ø)
Windows	81.80% <ø> (-8.70%)	⬇️
macOS	90.50% <ø> (ø)

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[xC0dex]

I guess there's not an easy way to add a test for this, right?

You're right. It’s hard to test as it happens during the dotnet pack command.
However, I tested it locally by publishing Swashbuckle and using the package in a multi target project. Before the change the document was generated during the build. After the change this was no longer the case.