java inference: setup initial constraints with respect of unchecked warning rules (IDEA-259701)

GitOrigin-RevId: e922b0cdfdecf6dfc3a50a334aa21e084aa1dd97

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/lambda/diamond/DiamondsUncheckedWarning.java

@@ -0,0 +1,13 @@
+import java.util.function.Consumer;
+
+class MyTest {
+  void m(Provider provider) {
+    provider.provide(new <error descr="Class 'Anonymous class derived from Consumer' must either be declared abstract or implement abstract method 'accept(T)' in 'Consumer'">Consumer<></error>() {
+      <error descr="Method does not override method from its superclass">@Override</error>
+      public void accept(String s) { }
+    });
+  }
+  static class Provider<T> {
+    void provide(Consumer<String> consumer){}
+  }
+}