#4102 fixes from review

Author: staysgt

src/backend/src/routes/finance.routes.ts

@@ -51,7 +51,12 @@ financeRouter.get('/sponsor/:sponsorId/sponsorTasks', FinanceController.getSpons
 
 financeRouter.post('/sponsor/:sponsorId/delete', FinanceController.deleteSponsor);
 
-financeRouter.post('/sponsor/:sponsorId/uploadLogo', upload.single('logoImage'), FinanceController.uploadSponsorLogo);
+financeRouter.post(
+  '/sponsor/:sponsorId/uploadLogo',
+  upload.single('logoImage'),
+  validateInputs,
+  FinanceController.uploadSponsorLogo
+);
 
 financeRouter.post(
   '/sponsorTier/create',

src/frontend/src/pages/FinancePage/FinanceComponents/CreateSponsorPage.tsx

@@ -17,7 +17,7 @@ interface CreateSponsorPageProps {
 
 const CreateSponsorPage = ({ showPage, handleClose }: CreateSponsorPageProps) => {
   const toast = useToast();
-  const { isLoading, mutateAsync } = useCreateSponsor();
+  const { isLoading, mutateAsync: createSponsor } = useCreateSponsor();
   const { mutateAsync: uploadLogo } = useUploadSponsorLogo();
 
   const {
@@ -56,7 +56,7 @@ const CreateSponsorPage = ({ showPage, handleClose }: CreateSponsorPageProps) =>
   const onFormSubmit = async (formData: SponsorPayload) => {
     try {
       setSubmitError(null);
-      const sponsor = await mutateAsync(formData);
+      const sponsor = await createSponsor(formData);
       if (logoImage) {
         await uploadLogo({ sponsorId: sponsor.sponsorId, logoImage });
       }