Fix -psmodulerestore path when start-psbuild is used in VSCode default build task - #8075

PR Summary

The logic in set the publish path for -psmodulerestore assumes a path that contains the pwsh executable so it uses the parent of -OutputPath. However, the VSCode default build task specifies a debug folder in the root of the repo. So the logic uses the parent and thus creates a Modules folder in the root of the repo. The fix is to check if the -OutputPath ends with pwsh and if so use the previous logic of using the parent folder, otherwise, just use the -OutputPath.

PR Checklist

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• Make sure all .h, .cpp, .cs, .ps1 and .psm1 files have the correct copyright header
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