Fix the view command having the claimed by field when it doesn't need it (#292)

- Remove the "claimed by" field from the card embed generator if its not supplied
- This does affect the drop command, now the drop command only shows the field upon claim, but I think that looks better

#276

Reviewed-on: #292
Co-authored-by: Ethan Lane <ethan@vylpes.com>
Co-committed-by: Ethan Lane <ethan@vylpes.com>

src/helpers/CardDropHelperMetadata.ts

@@ -94,13 +94,18 @@ export default class CardDropHelperMetadata {
                     name: "Claimed",
                     value: `${quantityClaimed}`,
                     inline: true,
-                },
+                }
+            ]);
+
+        if (claimedBy != null) {
+            embed.addFields([
                 {
                     name: "Claimed by",
-                    value: claimedBy ?? "(UNCLAIMED)",
+                    value: claimedBy,
                     inline: true,
                 }
             ]);
+        }
 
         if (currency != null) {
             embed.addFields([