refacto(invite|signin): remove unused code + fix signin on invite page. (#9745)

- Replace `window.location.replace` by `useRedirect` hook.
- Remove unused code: `switchWorkspace, addUserByInviteHash...`
- Refacto `Invite` component.
- Fix signin on invite modal.

packages/twenty-front/src/modules/domain-manager/hooks/useBuildWorkspaceUrl.ts

@@ -6,13 +6,13 @@ export const useBuildWorkspaceUrl = () => {
   const domainConfiguration = useRecoilValue(domainConfigurationState);
 
   const buildWorkspaceUrl = (
-    subdomain?: string,
+    subdomain: string,
     pathname?: string,
     searchParams?: Record<string, string>,
   ) => {
     const url = new URL(window.location.href);
 
-    if (isDefined(subdomain) && subdomain.length !== 0) {
+    if (subdomain.length !== 0) {
       url.hostname = `${subdomain}.${domainConfiguration.frontDomain}`;
     }