[DAS] Fixes different aliased imports same element

R=brianwilkerson@google.com

Fixes https://github.com/dart-lang/sdk/issues/59584

Change-Id: I7038827ad0414e73e6af8f37f90d56cfcb6e76af
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/397000
Reviewed-by: Brian Wilkerson <brianwilkerson@google.com>
Commit-Queue: Samuel Rawlins <srawlins@google.com>
Reviewed-by: Samuel Rawlins <srawlins@google.com>
Auto-Submit: Felipe Morschel <fmorschel.dev@gmail.com>
diff --git a/pkg/analysis_server/lib/src/lsp/handlers/custom/handler_imports.dart b/pkg/analysis_server/lib/src/lsp/handlers/custom/handler_imports.dart
index dc89d88..02c498a 100644
--- a/pkg/analysis_server/lib/src/lsp/handlers/custom/handler_imports.dart
+++ b/pkg/analysis_server/lib/src/lsp/handlers/custom/handler_imports.dart
@@ -140,6 +140,8 @@
     for (var directive in unit.directives.whereType<ImportDirective>()) {
       var import = directive.libraryImport;
       if (import == null) continue;
+      var importPrefix = directive.prefix?.name;
+      if (importPrefix != prefix) continue;
 
       var importedElement =
           prefix == null
diff --git a/pkg/analysis_server/test/lsp/import_test.dart b/pkg/analysis_server/test/lsp/import_test.dart
index c5d4d5d..3ccc01a 100644
--- a/pkg/analysis_server/test/lsp/import_test.dart
+++ b/pkg/analysis_server/test/lsp/import_test.dart
@@ -317,6 +317,20 @@
     );
   }
 
+  Future<void> test_import_multiple() async {
+    await _verifyGoToImports(
+      TestCode.parse('''
+import 'dart:async' as import1;
+import 'dart:async' as import2;
+/*[0*/import 'dart:async';/*0]*/
+/*[1*/import 'dart:core';/*1]*/
+import 'dart:math';
+
+Futur^e<void>? f;
+'''),
+    );
+  }
+
   Future<void> test_import_part() async {
     var otherFileUri = Uri.file(join(projectFolderPath, 'lib', 'other.dart'));
     var main = TestCode.parse('''