fix(auth): handle missing invitation during sign-up (#9572)

Add validation to throw an exception when a sign-up is attempted without
a valid invitation. Updated the test suite to cover this case and ensure
proper error handling with appropriate exceptions.

Fix https://github.com/twentyhq/twenty/issues/9566
https://github.com/twentyhq/twenty/issues/9564

packages/twenty-front/src/modules/auth/graphql/mutations/signUp.ts

@@ -7,6 +7,7 @@ export const SIGN_UP = gql`
     $workspaceInviteHash: String
     $workspacePersonalInviteToken: String = null
     $captchaToken: String
+    $workspaceId: String
   ) {
     signUp(
       email: $email
@@ -14,6 +15,7 @@ export const SIGN_UP = gql`
       workspaceInviteHash: $workspaceInviteHash
       workspacePersonalInviteToken: $workspacePersonalInviteToken
       captchaToken: $captchaToken
+      workspaceId: $workspaceId
     ) {
       loginToken {
         ...AuthTokenFragment