Rename Unintuitive Function Names in Authentication Flow (#9706)

Resolves #9623

## Description

This PR renames the following functions to better reflect their purpose.

- Backend:
  - Verify → GetAuthTokensFromLoginToken
  - Challenge → GetLoginTokenFromCredentials

- Frontend:
  - challenge → getLoginTokenFromCredentials
  - verify → getAuthTokensFromLoginToken

## Testing
_Sign in works as expected:_


https://github.com/user-attachments/assets/7e8f73c7-2c7d-4cd2-9965-5ad9f5334cd3

_Sign up works as expected:_
  

https://github.com/user-attachments/assets/d1794ee4-8b59-4934-84df-d819eabd5224

---------

Co-authored-by: Charles Bochet <charles@twenty.com>

packages/twenty-front/src/modules/auth/hooks/__tests__/useAuth.test.tsx

@@ -42,13 +42,13 @@ describe('useAuth', () => {
     jest.clearAllMocks();
   });
 
-  it('should return challenge object', async () => {
+  it('should return login token object', async () => {
     const { result } = renderHooks();
 
     await act(async () => {
-      expect(await result.current.challenge(email, password)).toStrictEqual(
-        results.challenge,
-      );
+      expect(
+        await result.current.getLoginTokenFromCredentials(email, password),
+      ).toStrictEqual(results.getLoginTokenFromCredentials);
     });
 
     expect(mocks[0].result).toHaveBeenCalled();
@@ -58,7 +58,7 @@ describe('useAuth', () => {
     const { result } = renderHooks();
 
     await act(async () => {
-      await result.current.verify(token);
+      await result.current.getAuthTokensFromLoginToken(token);
     });
 
     expect(mocks[1].result).toHaveBeenCalled();