FIX: Language navigation uses incorrect REQUEST_INTERNAL_URL

- Using default language must also set REQUEST_LOCALE_LANGUAGE to ""

src/main/java/org/genesys2/server/servlet/filter/LocaleURLFilter.java

@@ -172,8 +172,9 @@ public class LocaleURLFilter extends GenericFilterBean {
 
 			filterChain.doFilter(localeRequest, localeResponse);
 		} else {
-			LOG.debug("No match on url {}", url);
+			LOG.debug("No match on url {} setting {}", url, getInternalUrl(url, httpRequest.getQueryString()));
 			httpRequest.setAttribute(REQUEST_INTERNAL_URL, getInternalUrl(url, httpRequest.getQueryString()));
+			httpRequest.setAttribute(REQUEST_LOCALE_LANGUAGE, "");
 			final LocaleWrappedServletResponse localeResponse = new LocaleWrappedServletResponse(httpResponse, localeUrlMatcher, null, defaultLocale.toLanguageTag());
 			filterChain.doFilter(servletRequest, localeResponse);
 		}