"Invert if condition" intention works better for non-symmetric if's

#KT-5009 Fixed

idea/testData/intentions/invertIfCondition/lastStatementNonUnitMethod.kt.after

@@ -0,0 +1,11 @@
+// ERROR: A 'return' expression required in a function with a block body ('{...}')
+
+fun foo(): Int {
+    val x = 2
+    <caret>if (x <= 1) {
+    } else {
+        bar()
+    }
+}
+
+fun bar(){}