provide 'place' language level for convertible check to allow types from old libraries to be casted to primitives (IDEA-117684)

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/genericsHighlighting/CastObjectToIntJdk14.java

@@ -0,0 +1,7 @@
+class Test {
+
+  Object getObj() {return null;}
+  {
+    int a = (int) getObj();
+  }
+}