fix: safe-parse query schema in signup page to avoid zod throw (#18927)

apps/web/lib/signup/getServerSideProps.tsx

@@ -49,9 +49,6 @@ export const getServerSideProps = async (ctx: GetServerSidePropsContext) => {
     emailVerificationEnabled,
   };
 
-  // username + email prepopulated from query params
-  const { username: preFillusername, email: prefilEmail } = querySchema.parse(ctx.query);
-
   if ((process.env.NEXT_PUBLIC_DISABLE_SIGNUP === "true" && !token) || signupDisabled) {
     return {
       redirect: {
@@ -63,13 +60,15 @@ export const getServerSideProps = async (ctx: GetServerSidePropsContext) => {
 
   // no token given, treat as a normal signup without verification token
   if (!token) {
+    // username + email prepopulated from query params
+    const queryData = querySchema.safeParse(ctx.query);
     return {
       props: JSON.parse(
         JSON.stringify({
           ...props,
           prepopulateFormValues: {
-            username: preFillusername || null,
-            email: prefilEmail || null,
+            username: queryData.success ? queryData.data.username : null,
+            email: queryData.success ? queryData.data.email : null,
           },
         })
       ),