Consider public field initializers when detecting unused code.

PiperOrigin-RevId: 789425087

Author: Closure Team

src/com/google/javascript/jscomp/RemoveUnusedCode.java

@@ -1379,7 +1379,7 @@ private void traverseClassMembers(Node node, Scope scope) {
                     .buildClassOrPrototypeNamedProperty(member));
           }
           // TODO: b/354704593 - remove the entire class when it is not referenced
-          if (member.isStaticMember() && member.hasChildren()) {
+          if (member.hasChildren()) {
             traverseChildren(member, scope);
           }
           break;

test/com/google/javascript/jscomp/RemoveUnusedCodeClassPropertiesTest.java

@@ -1078,7 +1078,7 @@ public void testClassReferencedInFieldInitializer() {
     this.keepLocals = false;
     this.keepGlobals = false;
 
-    test(
+    testSame(
         """
         class One {
           field = 1;
@@ -1090,16 +1090,6 @@ class Two {
         alert(two);
         alert(two.field);
         alert(two.field.field);
-        """,
-        """
-        // Note: class One is errantly removed here.
-        class Two {
-          field = new One();
-        }
-        const two = new Two();
-        alert(two);
-        alert(two.field);
-        alert(two.field.field);
         """);
   }
 }