chore: deprecate ipfs-on-path (#1768)

This issue relies on brittle scripts which break over time and degrade
user experience. It also introduces maintenance overhead which we don't
have bandwidth to deal with.

This change keeps the feature enabled for existing users, but will hide
menu item for new users, so it is phased out over time.

src/tray.js

@@ -34,6 +34,7 @@ const CONFIG_KEYS = [
 
 // We show them if user enabled them before, but hide when off
 const DEPRECATED_KEYS = new Set([
+  IPFS_PATH_KEY, // brittle, buggy, way better if user does this by hand for now
   NPM_IPFS_KEY // superseded by https://github.com/forestpm/forest
 ])