[HaikuDepot] no package name in open button

[mt]

When an application package is installed from Haikudepot, Haikudepot shows Open button and Uninstall button. However, Open button does not displays package name while Uninstall button displays package name.

I think PackageManager::_CreateOpenPackageAction() has problem.

​https://cgit.haiku-os.org/haiku/tree/src/apps/haikudepot/packagemanagement/PackageManager.cpp#n221

[mt]

Open button, no package name

[madmax]

Given the trace, the ​DeskbarLink object contains a relative path from where the deskbar link is (for example, ../../../../apps/MyApp). When a BPath is initialized with that in _CreateOpenPackageAction, it is normalized from the working directory, and as there's no entry for that (unless you manually start HaikuDepot from a deskbar submenu directory), the path is unset.

[waddlesplash]

Fixed merged in hrev58201.