Yarn 4 Migration (#32253)

Migrates the Overleaf monorepo package manager from npm (v11) to Yarn 4 (v4.9.1) using node-modules linker mode.

GitOrigin-RevId: 50d32ab01955c15e29679eff9e9e9cfb897fab2d

server-ce/test/Makefile

@@ -35,7 +35,7 @@ test-e2e-native:
 	CYPRESS_HOST_ADMIN_URL='http://127.0.0.1:3232' \
 	CYPRESS_SAML_URL='http://127.0.0.1:3233' \
 	CYPRESS_MAILTRAP_URL='http://127.0.0.1:3234' \
-		npm run cypress:open
+		yarn run cypress:open
 
 # For testing "native" on Linux
 test-e2e-native-linux:

server-ce/test/docker-compose.yml

@@ -72,7 +72,7 @@ services:
         - USER_UID
         - USER_GID
     stop_grace_period: 0s
-    entrypoint: npm
+    entrypoint: yarn
     command: run cypress:run
     # See comment in Makefile regarding matching file paths
     working_dir: $PWD

server-ce/test/package.json

@@ -11,8 +11,8 @@
   },
   "devDependencies": {
     "@isomorphic-git/lightning-fs": "^4.6.0",
-    "@overleaf/promise-utils": "*",
-    "@overleaf/validation-tools": "*",
+    "@overleaf/promise-utils": "workspace:*",
+    "@overleaf/validation-tools": "workspace:*",
     "@testing-library/cypress": "10.1.0",
     "@types/adm-zip": "^0.5.7",
     "@types/uuid": "^9.0.8",