Makes pane::ReopenClosedItem (`cmd-shift-t` macos / `ctrl-shift-t` linux) work in Project Panel and other non-`Pane` Dock contexts too (Diagnostics, Outline, Git, Collab).
Makes pane::ReopenClosedItem (`cmd-shift-t` macos / `ctrl-shift-t` linux) work in Project Panel and other non-`Pane` Dock contexts too (Diagnostics, Outline, Git, Collab).