Fix path for open command in launcher
Fix path for open command in launcher

It's a common pattern for power users to replace `open` with some other
file manager. Since the launcher relies on the OS `open` command, having
the full path will avoid issues with users aliasing `open` to something
else while keeping the current behavior the same.

allotria/intellij-community,allotria/intellij-community,allotria/intellij-community,allotria/intellij-community,allotria/intellij-community,allotria/intellij-community,allotria/intellij-community,allotria/intellij-community,allotria/intellij-community,allotria/intellij-community,allotria/intellij-community,allotria/intellij-community,allotria/intellij-community