inference: raise unchecked warning if low/equals bounds are not assignable without unchecked conversion (IDEA-150495)

java/java-tests/testSrc/com/intellij/codeInsight/daemon/lambda/GenericsHighlighting8Test.java

@@ -950,4 +950,8 @@ public class GenericsHighlighting8Test extends LightDaemonAnalyzerTestCase {
   public void testCastingCapturedWildcardToArray() throws Exception {
     doTest();
   }
+
+  public void testCheckUncheckedAssignmentDuringVariablesResaolution() throws Exception {
+    doTest(true);
+  }
 }