Add default role to workspace (#10444)

## Context
Adding a defaultRole to each workspace, this role will be automatically
added when a member joins a workspace via invite link or public link
(seeds work differently though).
Took the occasion to refactor a bit the frontend components, splitting
them in smaller components for more readability.

## Test
<img width="948" alt="Screenshot 2025-02-24 at 14 54 02"
src="https://github.com/user-attachments/assets/13ef1452-d3c9-4385-940c-2ced0f0b05ef"
/>

packages/twenty-front/src/modules/object-metadata/hooks/__tests__/useFieldMetadataItem.test.tsx

@@ -21,6 +21,16 @@ import {
   responseData as findManyObjectMetadataItemsResponseData,
 } from '../__mocks__/useFindManyObjectMetadataItems';
 
+jest.mock('@/object-metadata/hooks/useUpdateOneFieldMetadataItem', () => ({
+  useUpdateOneFieldMetadataItem: () => ({
+    updateOneFieldMetadataItem: jest.fn().mockResolvedValue({
+      data: {
+        updateOneField: responseData.default,
+      },
+    }),
+  }),
+}));
+
 const fieldMetadataItem: FieldMetadataItem = {
   id: FIELD_METADATA_ID,
   createdAt: '',
@@ -111,17 +121,6 @@ const mocks = [
       },
     })),
   },
-  {
-    request: {
-      query: queries.activateMetadataField,
-      variables: variables.activateMetadataField,
-    },
-    result: jest.fn(() => ({
-      data: {
-        updateOneField: responseData.default,
-      },
-    })),
-  },
   {
     request: {
       query: queries.createMetadataField,
@@ -133,26 +132,6 @@ const mocks = [
       },
     })),
   },
-  {
-    request: {
-      query: queries.activateMetadataField,
-      variables: variables.deactivateMetadataField,
-    },
-    result: jest.fn(() => ({
-      data: {
-        updateOneField: responseData.default,
-      },
-    })),
-  },
-  {
-    request: {
-      query: queries.getCurrentUser,
-      variables: {},
-    },
-    result: jest.fn(() => ({
-      data: responseData.getCurrentUser,
-    })),
-  },
   {
     request: {
       query: queries.getCurrentUser,