Fixing multiple spaces causing issues in the card filter

gemp-lotr/gemp-lotr-server/src/main/java/com/gempukku/lotro/game/SortAndFilterCards.java

@@ -250,7 +250,7 @@ public class SortAndFilterCards {
     // any combination of the two.
     //Note that this coerces the key into lowercase
     private Map<String, List<String>> parseFilterParams(String filter) {
-        String[] params = filter.split(" ");
+        String[] params = filter.split(" +");
         Map<String, List<String>> result = new HashMap<>();
 
         for (String param : params) {
@@ -260,6 +260,9 @@ public class SortAndFilterCards {
             var parts = param.split(":");
             String key = parts[0].toLowerCase();
 
+            if(parts.length < 2)
+                continue;
+
             if(!result.containsKey(key)) {
                 var list = new ArrayList<>(Arrays.stream(parts[1].split(",")).toList());
                 result.put(key, list);