[JS_IR] Don't capture the bound receiver of a CR

compiler/testData/codegen/box/callableReference/bound/dontShareReceiver.kt

@@ -0,0 +1,12 @@
+// IGNORE_BACKEND_FIR: JVM_IR
+
+fun box(): String {
+    var state = 0
+    val f = (state++)::toString
+    val s1 = f()
+    if (s1 != "0") return "fail 1: $s1"
+    ++state
+    val s2 = f()
+    if (s2 != "0") return "fail 2: $s2"
+    return "OK"
+}