Incorrect order of P4Merge args

[RussKie]

Preamble

Verify.Xunit v11.18.1

Describe the bug

P4Merge has the following args: $BASE" "$LOCAL" "$REMOTE" "$MERGED", which appears to be reversed by the verifier.

The verifier launched P4MErge with the following command:
"C:\Program Files\Perforce\p4merge.exe" "...received.txt" "....verified.txt" "....verified.txt" "....received.txt", which leads to the following:

The command instead must be "C:\Program Files\Perforce\p4merge.exe" "...received.txt" "....received.txt" "....verified.txt" "....verified.txt":

Minimal Repro

        [Fact]
        public Task Test()
        {
            return Verifier.Verify("boo");
        }

Submit a PR that fixes the bug

If you point me to the source code I may be able to fix it.

[SimonCropp]

does this look better VerifyTests/DiffEngine@9cf1d1b ?

[SimonCropp]

thanks for you help. this is now deployed (pending a nuget cache update)

[RussKie]

Thank you for the awesomely quick turnaround!

[SimonCropp]

no worries. as a aside, is the codebase you using this an OSS project?

[RussKie]

Yes, https://github.com/dotnet/winforms :)

[SimonCropp]

cool. what branch?

[RussKie]

dotnet/winforms#5035