Issue 26096. Explicitly compute the result that ensures that directives are resolved in units.

pkg/analysis_server/lib/src/analysis_server.dart

Index: pkg/analysis_server/lib/src/analysis_server.dart
diff --git a/pkg/analysis_server/lib/src/analysis_server.dart b/pkg/analysis_server/lib/src/analysis_server.dart
index 101348b6839ad8b34e39445cfb9720537b2da4a7..6bda5f9eb023a1c6639ed9955ec09dfcc1b8acea 100644
--- a/pkg/analysis_server/lib/src/analysis_server.dart
+++ b/pkg/analysis_server/lib/src/analysis_server.dart
@@ -1471,7 +1471,7 @@ class AnalysisServer {
     onContextsChanged.listen((ContextsChangedEvent event) {
       for (AnalysisContext context in event.added) {
         context
-            .onResultChanged(RESOLVED_UNIT2)
+            .onResultChanged(RESOLVED_UNIT3)
             .listen((ResultChangedEvent event) {
           if (event.wasComputed) {
             Object value = event.value;