Fix lints and tests.

Author: isoos

lib/src/model/canonicalization.dart

@@ -89,7 +89,7 @@ final class _Canonicalization {
     Element2? ancestor = element;
     while (ancestor != null) {
       if (ancestor is LibraryElement2) {
-        components.insert(0, ancestor.identifier);
+        components.insert(0, ancestor.uri.toString());
       } else {
         components.insert(0, ancestor.name3!);
       }

lib/src/model/model_element.dart

@@ -412,11 +412,12 @@ abstract class ModelElement
       return false;
     }
 
-    if (element case LibraryElement2(:var identifier, :var firstFragment)) {
+    if (element case LibraryElement2(:var uri, :var firstFragment)) {
+      final url = uri.toString();
       // Private Dart SDK libraries are not public.
-      if (identifier.startsWith('dart:_') ||
-          identifier.startsWith('dart:nativewrappers/') ||
-          'dart:nativewrappers' == identifier) {
+      if (url.startsWith('dart:_') ||
+          url.startsWith('dart:nativewrappers/') ||
+          url == 'dart:nativewrappers') {
         return false;
       }
       // Package-private libraries are not public.

test/end2end/dartdoc_test.dart

@@ -110,7 +110,7 @@ void main() {
       expect(
           useSomethingInAnotherPackage.modelType.linkedName,
           matches(
-              r'<a class="deprecated" href="https://pub.dev/documentation/meta/[^"]*/meta/Required-class.html">Required</a>'));
+              r'<a href="https://pub.dev/documentation/meta/[^"]*/meta/Required-class.html">Required</a>\?'));
       var link = RegExp('/dart-core/String-class.html">String</a>');
       expect(useSomethingInTheSdk.modelType.linkedName, contains(link));
     });