Fix build workflow publishing empty.nupkg from EmptyFiles test package

[Copilot]

The build workflow was attempting to publish empty.nupkg created by the EmptyFiles test helper package, causing conflicts at https://nuget.pkg.github.com/foundatiofx and https://f.feedz.io/foundatio/foundatio/nuget.

Changes

• Added filter to exclude paths containing /EmptyFiles/ directory
• Applied to both CI and release publishing steps
• Made find command explicit by specifying search path

Before:

find -name "*.nupkg" | grep "minver" -v

After:

find . -name "*.nupkg" | grep -v "minver" | grep -v "/EmptyFiles/"

This approach excludes test helper files in tests/**/bin/**/EmptyFiles/ while working with any build directory structure, not assuming packages are only in a specific location.

Original prompt

The shared build is trying to publish empty.nupkg. Fix it.

Run for package in $(find -name "*.nupkg" | grep "minver" -v); do
9b6b3f62-2b15-470b-ae8e-3ab977e2b7ef.sh: Pushing ./tests/Foundatio.Mediator.Tests/bin/Release/net10.0/EmptyFiles/archive/empty.nupkg to GitHub...
Pushing empty.nupkg to 'https://nuget.pkg.github.com/foundatiofx'...
PUT https://nuget.pkg.github.com/foundatiofx/
warn : Error: Version 1.0.0 of "empty" has already been pushed.
Conflict https://nuget.pkg.github.com/foundatiofx/ 108ms
Package '/home/runner/work/Foundatio.Mediator/Foundatio.Mediator/./tests/Foundatio.Mediator.Tests/bin/Release/net10.0/EmptyFiles/archive/empty.nupkg' already exists at feed 'https://nuget.pkg.github.com/foundatiofx'.
9b6b3f62-2b15-470b-ae8e-3ab977e2b7ef.sh: Pushing ./tests/Foundatio.Mediator.Tests/bin/Release/net10.0/EmptyFiles/archive/empty.nupkg to Feedz...
Pushing empty.nupkg to 'https://f.feedz.io/foundatio/foundatio/nuget'...
PUT https://f.feedz.io/foundatio/foundatio/nuget/
Conflict https://f.feedz.io/foundatio/foundatio/nuget/ 894ms
Package '/home/runner/work/Foundatio.Mediator/Foundatio.Mediator/./tests/Foundatio.Mediator.Tests/bin/Release/net10.0/EmptyFiles/archive/empty.nupkg' already exists at feed 'https://f.feedz.io/foundatio/foundatio/nuget'.

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[ejsmith]

@copilot I don't like this fix because it is assuming that builds always go to the artifacts folder.

[Copilot]

You're right. I've updated the fix to exclude paths containing /EmptyFiles/ instead of limiting to the artifacts directory. This works regardless of where packages are built. Changes in e3c7182.