Partial scriptlet does not function properly in a JSP tag attribute with EAP 7.4.10+

Issue

• We previously used partial scriptlets in JSP tags on EAP 7.1.5 - 7.4.9, for example:

      <jsp:include page="include.jsp?param=<%=request.getAttribute(\"value\")%>"/>

• Updating to EAP 7.4.10+, these no longer properly function. The partial scriptlet in an include tag leads to an error like the following as the scriptlet is passed in the URL now unresolved as a plain string:

Caused by: io.undertow.util.UrlDecodeException: UT000072: Failed to decode url <%=request.getAttribute("value")%> to charset UTF-8
    at io.undertow.util.URLUtils.decode(URLUtils.java:167)
    at io.undertow.util.URLUtils$QueryStringParser.decode(URLUtils.java:300)
    at io.undertow.util.URLUtils$QueryStringParser.parse(URLUtils.java:282)
    at io.undertow.util.URLUtils.parseQueryString(URLUtils.java:64)
    at io.undertow.server.Connectors.setExchangeRequestPath(Connectors.java:502)
    at io.undertow.server.Connectors.setExchangeRequestPath(Connectors.java:466)
    at io.undertow.servlet.util.DispatchUtils.assignRequestPath(DispatchUtils.java:238)
    at io.undertow.servlet.util.DispatchUtils.dispatchInclude(DispatchUtils.java:119)
    at io.undertow.servlet.spec.RequestDispatcherImpl.includeImpl(RequestDispatcherImpl.java:321)
    at io.undertow.servlet.spec.RequestDispatcherImpl.setupIncludeImpl(RequestDispatcherImpl.java:285)
    at io.undertow.servlet.spec.RequestDispatcherImpl.include(RequestDispatcherImpl.java:249)
    at org.apache.jasper.runtime.JspRuntimeLibrary.include(JspRuntimeLibrary.java:912)
    at org.apache.jsp.include._jspService(crewganttframeset_jsp.java:215)