Fix the type of (after-first) named parameter in `ArgumentList`.

Fixes #48514
Fixes #48310

Change-Id: I6cab8052a91a51a4c44470e5be81b78ef68e56cc
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/242281
Reviewed-by: Brian Wilkerson <brianwilkerson@google.com>
Commit-Queue: Brian Wilkerson <brianwilkerson@google.com>
diff --git a/pkg/analysis_server/lib/src/services/completion/dart/feature_computer.dart b/pkg/analysis_server/lib/src/services/completion/dart/feature_computer.dart
index 983ff52..0996659 100644
--- a/pkg/analysis_server/lib/src/services/completion/dart/feature_computer.dart
+++ b/pkg/analysis_server/lib/src/services/completion/dart/feature_computer.dart
@@ -540,10 +540,12 @@
           if (offset <= argument.offset) {
             return typeOfIndexPositionalParameter();
           }
-          if (argument.contains(offset) && offset >= argument.name.end) {
-            return argument.staticParameterElement?.type;
+          if (argument.contains(offset)) {
+            if (offset >= argument.name.end) {
+              return argument.staticParameterElement?.type;
+            }
+            return null;
           }
-          return null;
         } else {
           if (previousArgument == null || previousArgument.end < offset) {
             if (offset <= argument.end) {
diff --git a/pkg/analysis_server/test/src/services/completion/dart/feature_computer_test.dart b/pkg/analysis_server/test/src/services/completion/dart/feature_computer_test.dart
index bfa63e0..f866620 100644
--- a/pkg/analysis_server/test/src/services/completion/dart/feature_computer_test.dart
+++ b/pkg/analysis_server/test/src/services/completion/dart/feature_computer_test.dart
@@ -109,6 +109,16 @@
 ''', 'int');
   }
 
+  Future<void> test_argumentList_named_second() async {
+    await assertContextType('''
+void f({String p1, int p2}) {}
+
+void g() {
+  f(p1: '', p2: ^);
+}
+''', 'int');
+  }
+
   Future<void> test_argumentList_named_unresolved_hasNamedParameters() async {
     await assertContextType('''
 void f({int i}) {}