chore(server): hoist deps (#12145)

<!-- This is an auto-generated comment: release notes by coderabbit.ai -->
## Summary by CodeRabbit

- **Chores**
  - Updated workflow to move the node_modules directory during the build process.
  - Adjusted Prisma client output directory for improved file organization.
  - Removed unused properties from backend server package configuration.

- **Refactor**
  - Simplified type annotations for improved code clarity in test utilities.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

packages/backend/server/package.json

@@ -177,9 +177,5 @@
       "**/*.spec.ts",
       "**/*.e2e.ts"
     ]
-  },
-  "stableVersion": "0.5.3",
-  "installConfig": {
-    "hoistingLimits": "workspaces"
   }
 }

packages/backend/server/schema.prisma

@@ -1,6 +1,6 @@
 generator client {
   provider        = "prisma-client-js"
-  output          = "./node_modules/.prisma/client"
+  output          = "../../../node_modules/.prisma/client"
   binaryTargets   = ["native", "debian-openssl-3.0.x", "linux-arm64-openssl-3.0.x"]
   previewFeatures = ["metrics", "relationJoins", "nativeDistinct", "postgresqlExtensions"]
 }