Windows desktop rebuilds intermittently hit rcedit's `Fatal error: Unable
to commit changes` while a real-time file scanner holds the freshly packed
Hermes.exe; `stampExeIdentity` called rcedit exactly once, so the stamp
failed on the first lock. Retry the commit with bounded backoff before
surfacing the original error.
Trimmed from #112552: the after-pack.mjs injection seam and its test —
the hook's swallow-and-warn is pre-existing behaviour on main and needs no
change (the reporter's "Could not install the rebuilt desktop app" comes
from hermes_cli/main_desktop.py::_swap_staged_desktop_app's directory
rename, not from the stamp).
8ca920b52a