[JS BE] Fix the crash on compound operations with a qualified call on left side

#KT-22001 Fixed

compiler/testData/codegen/box/objects/compoundAssignmentToObjectFromCall.kt

@@ -0,0 +1,31 @@
+var log = ""
+
+class A(p: String) {
+    var pp = p
+
+    init {
+        log += "init($p);"
+    }
+}
+
+operator fun A.plusAssign(s: String) {
+    pp += s
+    log += "pp = $pp;"
+}
+
+inline fun <T, R> T.foo(f: (T) -> R) = f(this)
+
+fun <T, R> T.bar(f: (T) -> R) = f(this)
+
+fun box(): String {
+    "rrr".foo { A(it) } += "aaa"
+
+    if (log != "init(rrr);pp = rrraaa;") return "1: log = \"$log\""
+
+    log = ""
+    "foo".bar { A(it) } += "baaar"
+
+    if (log != "init(foo);pp = foobaaar;") return "2: log = \"$log\""
+
+    return "OK"
+}