Strictly type encryption rotation key site maps constants through entity type derivation (#21085)

# Introduction
Followup https://github.com/twentyhq/twenty/pull/21001

Now that the typeorm entities provide grains over their
`encryptedString` value, we can strictly type the sitemaps of the
encrypted string to rotate in case of encryption key rotation and also
the integration tests tests cases

packages/twenty-server/src/engine/workspace-manager/workspace-migration/universal-flat-entity/types/__tests__/extract-jsonb-properties.type-test.ts

@@ -1,11 +1,9 @@
 import { type Equal, type Expect } from 'twenty-shared/testing';
+import { type EmptyObject } from 'twenty-shared/types';
 
 import { type ExtractJsonbProperties } from 'src/engine/workspace-manager/workspace-migration/universal-flat-entity/types/extract-jsonb-properties.type';
 import { type JsonbProperty } from 'src/engine/workspace-manager/workspace-migration/universal-flat-entity/types/jsonb-property.type';
 
-// oxlint-disable-next-line @typescripttypescript/no-empty-object-type
-type EmptyObject = {};
-
 type TestedRecord = {
   // Non-JsonbProperty fields
   plainString: string;

packages/twenty-server/src/engine/workspace-manager/workspace-migration/universal-flat-entity/types/__tests__/jsonb-property.type-test.ts

@@ -1,13 +1,11 @@
 import { type Equal, type Expect } from 'twenty-shared/testing';
+import { type EmptyObject } from 'twenty-shared/types';
 
 import {
   type JSONB_PROPERTY_BRAND,
   type JsonbProperty,
 } from 'src/engine/workspace-manager/workspace-migration/universal-flat-entity/types/jsonb-property.type';
 
-// oxlint-disable-next-line @typescripttypescript/no-empty-object-type
-type EmptyObject = {};
-
 type SimpleObject = { value: string };
 
 type NestedObject = { nested: { deep: number } };