Apply De Morgan's laws to non-negated binary expressions

So #KT-18460 Fixed

idea/testData/intentions/convertBinaryExpressionWithDemorgansLaw/nonstandardPrefixOperator.kt

@@ -0,0 +1,7 @@
+operator fun Boolean.unaryPlus(): Boolean {
+    return false
+}
+
+fun foo(a: Boolean, b: Boolean) : Boolean {
+    return !(<caret>+a || b)
+}