JS: decomposition should preserve 'this' context with invocations

#KT-7502 fixed

js/js.translator/testData/inlineEvaluationOrder/cases/methodCallQualifierWithSideEffect.kt

@@ -0,0 +1,14 @@
+package foo
+
+// Test for KT-7502
+
+class A(val value: Int) {
+    fun plus(num: Int): Int = this.value + num
+}
+
+fun box(): String {
+    assertEquals(15, A(fizz(5)).plus(buzz(10)))
+    assertEquals("fizz(5);buzz(10);", pullLog())
+
+    return "OK"
+}