conditional: ensure to convert type from parent to ll >= 1.8 so assignments would be correct, etc (IDEA-161854)

java/java-tests/testData/codeInsight/multipleJdks/java3/p/ConditionalAssignedToJava3Object.java

@@ -0,0 +1,4 @@
+package p;
+class A {
+  public void foo(Object o) {}
+}

java/java-tests/testData/codeInsight/multipleJdks/java8/p/ConditionalAssignedToJava3Object.java

@@ -0,0 +1,6 @@
+package p;
+class B {
+  void bar(A a) {
+    a.foo(true ? "1" : 1);
+  }
+}