[Fix] - Issue with Email Validation and API Call Trigger on Login #7510 (#7596)

Purpose: Enhance email validation in the SignInUpForm component.

Changes:
- Implemented strict email format validation.
- Disabled the "Continue" button until email validation is complete.
- Displayed error messages for invalid email formats.


![image](https://github.com/user-attachments/assets/62f3c114-002e-4f9f-b18f-5309dfc43587)

---------

Co-authored-by: karankhatik <karan13699@gmail.com>
Co-authored-by: Charles Bochet <charles@twenty.com>

packages/twenty-front/src/modules/auth/sign-in-up/components/SignInUpForm.tsx

@@ -76,6 +76,10 @@ export const SignInUpForm = () => {
       if (signInUpStep === SignInUpStep.Init) {
         continueWithEmail();
       } else if (signInUpStep === SignInUpStep.Email) {
+        if (isDefined(form?.formState?.errors?.email)) {
+          setShowErrors(true);
+          return;
+        }
         continueWithCredentials();
       } else if (signInUpStep === SignInUpStep.Password) {
         if (!form.formState.isSubmitting) {
@@ -238,6 +242,10 @@ export const SignInUpForm = () => {
                   return;
                 }
                 if (signInUpStep === SignInUpStep.Email) {
+                  if (isDefined(form?.formState?.errors?.email)) {
+                    setShowErrors(true);
+                    return;
+                  }
                   continueWithCredentials();
                   return;
                 }