struts/ognl case sensitivity on bean names

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After doing a bit more digging,  seems to be related to this change

https://issues.apache.org/jira/projects/WW/issues/WW-5370

org.apache.struts2.dispatcher. HttpParameters

private HttpParameters(Map<String, Parameter> parameters) {
         this.parameters = new TreeMap<>(String.CASE_INSENSITIVE_ORDER);
         this.parameters.putAll(parameters);
}

Previously

private HttpParameters(Map<String, Parameter> parameters) {
         this.parameters = parameters;
     }

Which subtly breaks things, so check your forms!

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