PSVersionTable.Tests.ps1 handles certain builds incorrectly.

Prerequisites

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• Make sure you are able to repro it on the latest released version
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Steps to reproduce

Affected version: All up to trunk.

There's a logic mismatch in PSVersionTable.Tests.ps1. More specifically, it tests here whether or not a commit build matches "^(\d+\.\d+\.\d+)(-.+)?" - and the issue is that GitCommitId absolutely can look like that and will indeed. See the comments here in PSVersionInfoGenerator.cs about how such a GitCommitId can look - but most importantly, it's ALWAYS prefixed by the version - and thus always matching the string it should not match.

As you can see, my GitCommitId after a clean build from the 7.6.2 git tag is 7.6.2-0-g0d3c290a8737d4252ee75c052d16190ffcdb7d19. This matches of course.

Expected behavior

No error.

Actual behavior

[-] GitCommitId property 3ms
      Expected regular expression '^(\d+\.\d+\.\d+)(-.+)?-(\d+)-g(.+)$' to not match '7.6.2-0-g0d3c290a8737d4252ee75c052d16190ffcdb7d19', but it did match.
      55:        $PSVersionTable.GitCommitId | Should -Not -Match $unexpectectGitCommitIdPattern
      at <ScriptBlock>, /home/aurutils/.cache/aurutils/sync/powershell/src/PowerShell/test/powershell/Host/PSVersionTable.Tests.ps1: line 55

Error details

Environment data

Name                           Value
----                           -----
PSVersion                      7.6.2
PSEdition                      Core
GitCommitId                    7.6.2-0-g0d3c290a8737d4252ee75c052d16190ffcdb7d19
OS                             Arch Linux
Platform                       Unix
PSCompatibleVersions           {1.0, 2.0, 3.0, 4.0…}
PSRemotingProtocolVersion      2.4
SerializationVersion           1.1.0.1
WSManStackVersion              3.0

Visuals

No response

Start in test/powershell/Host/PSVersionTable.Tests.ps1, especially the GitCommitId assertions around line 55, and compare them with the GitCommitId format described in PSVersionInfoGenerator.cs. Update the test's pattern or expectation so the reported 7.6.2-0-g... value is handled correctly, then run the PSVersionTable tests and confirm the clean-tag build produces no error.