Undo operation for CopyDirectory fails if forceOverwrite is passed as an argument

There's an undocumented argument forceOverwrite that we can pass to the
CopyDirectory operation in order to force an overwrite of files:

  component.addOperation("CopyDirectory", "/Users/me/testdir/", "/Users/me/testdir2/", "forceOverwrite");

However, this makes uninstalls fail:

[9979] undo operation= "CopyDirectory"
[9979] undo com.verimatrix.xcode_plugin operation: CopyDirectory
[9979] 	- arguments: /Users/me/testdir/, /Users/me/testdir2/, forceOverwrite
[9979] Done
[9983] installationErrorWithIgnore : Installer Error : Error during uninstallation process:
Invalid arguments in CopyDirectory: 3 arguments given, exactly 2 arguments expected. Retry|Ignore

If we look at installer-framework/src/libs/installer/copydirectoryoperation.cpp, the performOperation method for the CopyDirectory operation accepts 2 or 3 arguments:

bool CopyDirectoryOperation::performOperation() 
{
    if (!checkArgumentCount(2, 3, tr("<source> <target> [\"forceOverwrite\"]")))
        return false;
}

But the undo operation has the following check which makes the UNDO fail:

    if (!checkArgumentCount(2))
        return false;