Issue in RefRefMapSerializer

[leventov]

The following call of Map.contains on a map with String keys with an Object argument:

jackson-datatypes-collections/eclipse-collections/src/main/java/com/fasterxml/jackson/datatype/eclipsecollections/ser/map/RefRefMapSerializer.java

Line 225 in c374783

if ((ignored != null) && ignored.contains(key)) {

Probably the key should be serialized before checking if it should be ignored.