[4337] Get Pending Safe Operations

[yagopv]

Context / Issue

The usePendingSafeOperations hook is not working as expected because the txService endpoint does not allow filtering by pending operations.

Proposed Solution

After implementing the retrieval and pagination of pending safe operations, we need to develop and utilize the endpoint. Several affected kits require updates and testing:

• api-kit: Implement the endpoint with a new method.
• sdk-starter-kit: Use the new method in getPendingSafeOperations.
• safe-react-hooks: Test compatibility with the changes in the other kits.

Additional Context

safe-global/safe-transaction-service#2314