Fix requesting new seasons after approval (#1816)

## Description
Fixes requesting additional seasons of a show if a previous request has
already been approved

Now if the previous request is already approved/completed/etc, a new
request will be created instead of trying to update the previous one.
Pending requests will still be updated as before instead of requesting a
new one.

### Related issues
Fixes #1702

### Testing
Emulator

## Screenshots
N/A

## AI or LLM usage
None

app/src/main/java/com/github/damontecres/wholphin/data/model/DiscoverItem.kt

@@ -71,6 +71,23 @@ enum class SeerrAvailability(
     }
 }
 
+@Serializable
+enum class RequestStatus(
+    val status: Int,
+) {
+    UNKNOWN(0),
+    PENDING(1),
+    APPROVED(2),
+    DECLINED(3),
+    FAILURE(4),
+    COMPLETED(5),
+    ;
+
+    companion object {
+        fun from(status: Int?) = RequestStatus.entries.firstOrNull { it.status == status } ?: UNKNOWN
+    }
+}
+
 /**
  * An item provided by a discovery service (ie Seerr). It may exist on the JF server as well, see [availability].
  */