Fix searching serialized classes package contains multiple fragments

js/js.translator/testData/box/incremental/functionReferencingClass.kt

@@ -0,0 +1,21 @@
+// EXPECTED_REACHABLE_NODES: 995
+// FILE: A.kt
+
+open class A {
+    open fun f(): Int = 1
+}
+
+// FILE: useA.kt
+// RECOMPILE
+
+fun useA(a: A): Int = a.f()
+fun useList(xs: List<Int>) {}
+
+// FILE: box.kt
+
+fun box(): String {
+    val result = useA(A())
+    if (result != 1) return "fail: result of 'useA(A())' is '$result', but '1' was expected"
+
+    return "OK"
+}