Fix REST API filters (#12929)

# Introduction
close https://github.com/twentyhq/twenty/issues/12921

### Done here:
- Removed
[check-order-by.utils.ts](https://github.com/twentyhq/twenty/pull/12929/files#diff-d044effc0b77b3b67523595ce0febd786d3a0fd74ae905ce2efc349134d7c7d0)
that was a duplicated
- new debug entry `twenty-server` entrypoint
- fixed the fields name computation in case of a relation field metadata
type
- Updated and refactored coverage both unit and integration


![image](https://github.com/user-attachments/assets/e3f0937a-8b54-4ab5-8348-0cd742c107ea)

.vscode/launch.json

@@ -82,6 +82,27 @@
       "env": {
         "NODE_ENV": "test"
       },
+    },
+    {
+      "type": "node",
+      "request": "launch",
+      "name": "twenty-server - debug unit test file (to launch with test file open)",
+      "runtimeExecutable": "npx",
+      "runtimeArgs": [
+        "nx",
+        "run",
+        "twenty-server:jest",
+        "--",
+        "--config",
+        "./jest.config.ts",
+        "${relativeFile}"
+      ],
+      "cwd": "${workspaceFolder}/packages/twenty-server",
+      "console": "integratedTerminal",
+      "internalConsoleOptions": "neverOpen",
+      "env": {
+        "NODE_ENV": "test"
+      },
     }
   ]
 }