Add more tests for inline class equality

compiler/testData/codegen/box/inlineClasses/equalsCallsLeftArgument.kt

@@ -0,0 +1,14 @@
+// !LANGUAGE: +InlineClasses
+
+inline class A(val x: String)
+
+class B {
+    override fun equals(other: Any?) = true
+}
+
+fun box(): String {
+    val x: Any? = B()
+    val y: A = A("")
+    if (x != y) return "Fail"
+    return "OK"
+}