fix: force yarn install, remove from chroot

src/modules/monsterpi/filesystem/home/pi/scripts/update-fdm-monster.sh

@@ -171,7 +171,7 @@ echo "[7b/${ts}] Extracting new dist zip to ${dist_active_path}"
 
 # Step 8) Ensure yarn is new, (optional)
 echo "[8/${ts}] Updating yarn"
-npm i -g yarn
+npm i --global --force yarn
 yarn set version berry
 
 # Step 9) Ensure the required packages are present with yarn (which is already installed, we're just keeping it fresh)

src/modules/monsterpi/start_chroot_script

@@ -64,7 +64,6 @@ apt install -y nodejs
 
 # Enable yarn/pnpm/npm
 corepack enable
-npm install -g yarn
 
 pushd /home/"${BASE_USER}"
     # Install FDM Monster (this is really slow on QEMU!)