Generate JS source maps for object instance function

js/js.translator/testData/lineNumbers/multipleReferences.kt

@@ -12,4 +12,4 @@ object O {
     val y = 23
 }
 
-// LINES: 2 3 4 6 7 8 11 12
+// LINES: 2 3 4 6 7 8 11 12 * 11 11 11

js/js.translator/testData/lineNumbers/objectInstanceFunction.kt

@@ -0,0 +1,7 @@
+object O
+
+fun foo() {
+    println("foo")
+}
+
+// LINES: 1 * 1 1 1 4

js/js.translator/testData/lineNumbers/syntheticCodeInConstructors.kt

@@ -25,4 +25,4 @@ class C : A {
             )
 }
 
-// LINES: 1 3 * 10 11 * 15 16 17 14 19 15 22 23 24 22
+// LINES: 1 3 * 1 1 1 * 10 11 * 15 16 17 14 19 15 22 23 24 22

js/js.translator/testData/lineNumbers/syntheticCodeInEnums.kt

@@ -8,4 +8,4 @@ enum class E {
     }
 }
 
-// LINES: 1 1 1 1 2 3 4 * 2 2 * 3 3 4 4 6 * 1 * 1 1 1 1 1 1
+// LINES: 1 1 1 1 2 3 4 * 2 2 * 3 3 4 4 6 * 4 4 * 1 * 1 1 1 1 1 1