fix: electron packager on Linux

Ref: electron-userland/electron-builder#3179
Signed-off-by: Akos Kitta <a.kitta@arduino.cc>

Author: Akos Kitta

electron/build/template-package.json

@@ -20,7 +20,7 @@
   "scripts": {
     "build": "yarn download:plugins && theia build --mode production && yarn patch",
     "rebuild": "yarn theia rebuild:electron",
-    "package": "cross-env DEBUG=* && electron-builder --publish=never",
+    "package": "cross-env DEBUG=* && cross-env USE_HARD_LINKS=false && electron-builder --publish=never",
     "package:publish": "cross-env DEBUG=* && electron-builder --publish=always",
     "download:plugins": "theia download:plugins",
     "patch": "ncp ./patch/backend/main.js ./src-gen/backend/main.js"