Ensure that a complete library element has constants evaluated (issue 24890)

pkg/analysis_server/lib/src/services/correction/fix_internal.dart

Index: pkg/analysis_server/lib/src/services/correction/fix_internal.dart
diff --git a/pkg/analysis_server/lib/src/services/correction/fix_internal.dart b/pkg/analysis_server/lib/src/services/correction/fix_internal.dart
index 5dc5c2df0601534fdccdf9239b89356d1e03ebd7..145a167c11c54b9f91721a66b44c89648d49c13f 100644
--- a/pkg/analysis_server/lib/src/services/correction/fix_internal.dart
+++ b/pkg/analysis_server/lib/src/services/correction/fix_internal.dart
@@ -35,6 +35,7 @@ import 'package:analyzer/src/generated/scanner.dart';
 import 'package:analyzer/src/generated/sdk.dart';
 import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer/src/generated/utilities_dart.dart';
+import 'package:analyzer/src/task/dart.dart';
 import 'package:path/path.dart';
 
 /**
@@ -1446,7 +1447,7 @@ class FixProcessor {
             sdkSourceFactory.resolveUri(unitSource, libraryUri);
         // prepare LibraryElement
         LibraryElement libraryElement =
-            context.getLibraryElement(librarySource);
+            context.getResult(librarySource, LIBRARY_ELEMENT8);
         if (libraryElement == null) {
           continue;
         }
@@ -1479,7 +1480,7 @@ class FixProcessor {
         }
         // prepare LibraryElement
         LibraryElement libraryElement =
-            context.getLibraryElement(librarySource);
+            context.getResult(librarySource, LIBRARY_ELEMENT8);
         if (libraryElement == null) {
           continue;
         }