Fix build errors: add missing stub exports and fix implicit any types

- Add getApprovalWorkflowsByEntities to approval.workflows.be.ts stub
- Add filterAllowedUsers to users.be.ts stub
- Make convertToUsers synchronous in groups.be.ts stub
- Remove unused import of deleted API route in entities/[id]/index.tsx
- Fix implicit any type errors in approval-workflows, entities, permissions pages

Made-with: Cursor

src/pages/approval-workflows/index.tsx

@@ -76,8 +76,8 @@ export const getServerSideProps = withIronSessionSsr(async ({ req, res }) => {
 	const allAssigneeIds: string[] = [
 		...new Set(
 			workflows
-				.map(workflow => workflow.steps
-					.map(step => step.assignees)
+				.map((workflow: any) => workflow.steps
+					.map((step: any) => step.assignees)
 					.flat()
 				).flat()
 		)