Add indication of resolver provider to the status page

pkg/analysis_server/lib/src/status/get_handler.dart

Index: pkg/analysis_server/lib/src/status/get_handler.dart
diff --git a/pkg/analysis_server/lib/src/status/get_handler.dart b/pkg/analysis_server/lib/src/status/get_handler.dart
index b20d6426102bac017c8d832cb63fc0ecce846657..0887d07407f72358272de3e25db1e375440e127c 100644
--- a/pkg/analysis_server/lib/src/status/get_handler.dart
+++ b/pkg/analysis_server/lib/src/status/get_handler.dart
@@ -1666,6 +1666,9 @@ class GetHandler {
           buffer.write('<p>Status: Analyzing</p>');
         }
       }
+      buffer.write('<p>Using package resolver provider: ');
+      buffer.write(_server.packageResolverProvider != null);
+      buffer.write('</p>');
       buffer.write('<p>');
       buffer.write(makeLink(OVERLAYS_PATH, {}, 'All overlay information'));
       buffer.write('</p>');