feat: refine DonationsForm gift handling while paying through planet …

…cash

- explicitly sets `gift` based on type

src/Donations/Components/DonationsForm.tsx

@@ -301,14 +301,28 @@ function DonationsForm(): ReactElement {
         utm_source: utmSource,
       };
 
-      const _gift = {
-        ...giftDetails,
-      };
-
-      if (giftDetails.type === "direct") {
-        delete _gift.message;
-        delete _gift.recipientName;
-      }
+      // Determine if gift info is complete
+      const isDirectGiftComplete =
+        giftDetails.type === "direct" && giftDetails.recipient.length > 0;
+
+      const isInvitationGiftComplete =
+        giftDetails.type === "invitation" &&
+        giftDetails.recipientName.length > 0;
+
+      // Set _gift to null if incomplete, otherwise construct gift object
+      const _gift = isDirectGiftComplete
+        ? {
+            type: "direct",
+            recipient: giftDetails.recipient,
+          }
+        : isInvitationGiftComplete
+        ? {
+            type: "invitation",
+            recipientName: giftDetails.recipientName,
+            recipientEmail: giftDetails.recipientEmail,
+            message: giftDetails.message,
+          }
+        : null;
 
       // create Donation data
       const donationData = {