Merge pull request #1247 from rainboyan

* pr/1247: Make 'grace-web-mvc' decoupled from 'grace-web-sitemesh'

Closes gh-1247

Author: rainboyan

grace-web-mvc/build.gradle

@@ -1,7 +1,6 @@
 dependencies {
     api project(":grace-gsp")
     api project(":grace-web")
-    api project(":grace-web-sitemesh")
     api project(":grace-web-url-mappings")
 
     compileOnlyApi libs.jakarta.servlet

grace-web-mvc/src/main/groovy/org/grails/web/errors/GrailsExceptionResolver.java

@@ -52,7 +52,6 @@
 import org.grails.web.mapping.DefaultUrlMappingInfo;
 import org.grails.web.mapping.UrlMappingUtils;
 import org.grails.web.servlet.mvc.exceptions.GrailsMVCException;
-import org.grails.web.sitemesh.GrailsContentBufferingResponse;
 import org.grails.web.util.GrailsApplicationAttributes;
 import org.grails.web.util.WebUtils;
 
@@ -195,10 +194,6 @@ protected ModelAndView resolveViewOrForward(Exception ex, UrlMappingsHolder urlM
             else if (info != null && info.getControllerName() != null) {
                 String uri = determineUri(request);
                 if (!response.isCommitted()) {
-                    if (response instanceof GrailsContentBufferingResponse) {
-                        // clear the output from sitemesh before rendering error page
-                        ((GrailsContentBufferingResponse) response).deactivateSitemesh();
-                    }
                     forwardRequest(info, request, response, mv, uri);
                     // return an empty ModelAndView since the error handler has been processed
                     return new ModelAndView();