KT-2334 partly fix: boolean to object coercion

compiler/testData/codegen/regressions/kt2334.kt

@@ -0,0 +1,13 @@
+import kotlin.test.*
+import org.junit.Test as test
+
+public class Test {
+    test fun f(): Unit {
+        assertEquals(true, !false)
+    }
+}
+
+fun box() : String {
+  Test().f()
+  return "OK"
+}