feat: redirect user to email verification page if not done

[ShubhamPalriwala]

What does this PR do?

Redirects user to Email Verification page where they can request a new email if they want to when they have not verified!

Fixes #2116

How should this be tested?

• Test A
• Test B

Checklist

Required

• Filled out the "How to test" section in this PR
• Read How we Code at Formbricks
• Self-reviewed my own code
• Commented on my code in hard-to-understand bits
• Ran pnpm build
• Checked for warnings, there are none
• Removed all console.logs
• Merged the latest changes from main onto my branch with git pull origin main
• My changes don't cause any responsiveness issues

Appreciated

• If a UI change was made: Added a screen recording or screenshots to this PR
• Updated the Formbricks Docs if changes were necessary

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[github-actions]

Thank you for following the naming conventions for pull request titles! 🙏

[review-agent-prime]

apps/web/app/(auth)/auth/login/components/SigninForm.tsx

The onSubmit function is quite long and complex. It would be beneficial to break it down into smaller, more manageable functions. This would make the code easier to read and maintain.
Create Issue
See the diff
Checkout the fix

    const handleSignInResponse = async (data: TSigninFormState) => {
      const signInResponse = await signIn("credentials", {
        callbackUrl: searchParams?.get("callbackUrl") || "/",
        email: data.email.toLowerCase(),
        password: data.password,
        ...(totpLogin && { totpCode: data.totpCode }),
        ...(totpBackup && { backupCode: data.backupCode }),
        redirect: false,
      });

      return signInResponse;
    };

    const handleSignInError = (signInResponse: any, data: TSigninFormState) => {
      if (signInResponse?.error === "second factor required") {
        setTotpLogin(true);
        setLoggingIn(false);
        return;
      }

      if (signInResponse?.error === "Email Verification is Pending") {
        router.push(`/auth/verification-requested?email=${data.email}`);
        return;
      }

      if (signInResponse?.error) {
        setLoggingIn(false);
        setSignInError(signInResponse.error);
        return;
      }

      if (!signInResponse?.error) {
        router.push(searchParams?.get("callbackUrl") || "/");
      }
    };

    const onSubmit: SubmitHandler<TSigninFormState> = async (data) => {
      setLoggingIn(true);

      try {
        const signInResponse = await handleSignInResponse(data);
        handleSignInError(signInResponse, data);
      } catch (error) {
        const errorMessage = error.toString();
        const errorFeedback = errorMessage.includes("Invalid URL")
          ? "Too many requests, please try again after some time!"
          : error.message;
        setSignInError(errorFeedback);
      } finally {
        setLoggingIn(false);
      }
    };

git fetch origin && git checkout -b ReviewBot/Impro-mfe98x3 origin/ReviewBot/Impro-mfe98x3