Closes https://github.com/twentyhq/twenty/issues/10807 ## Description This PR will Modify Decimal Fields to be treated as `number` in OpenAPI schema. ## Testing <img width="989" alt="スクリーンショット 2025-05-05 20 49 05" src="https://github.com/user-attachments/assets/2f120317-5860-4c93-91a2-f521a69a1cd5" /> <img width="872" alt="スクリーンショット 2025-05-05 20 49 52" src="https://github.com/user-attachments/assets/0d319785-e30b-4132-be9e-12ed6f3cc46a" /> --------- Co-authored-by: Takuya Kurimoto <takuya004869@gmail.com> Co-authored-by: prastoin <paul@twenty.com>