JS: fix parsing of wrong delete operation in js function.

See KT-15294

compiler/testData/diagnostics/testsWithJsStdLib/jsCode/deleteOperation.kt

@@ -0,0 +1,8 @@
+// !DIAGNOSTICS: -UNUSED_PARAMETER
+
+fun foo(x: Any) {
+    js("delete x.foo;")
+    js("delete x['bar'];")
+    js("delete x.baz<!JSCODE_ERROR!>()<!>;")
+    js("delete <!JSCODE_ERROR!>this<!>;")
+}

compiler/testData/diagnostics/testsWithJsStdLib/jsCode/deleteOperation.txt

@@ -0,0 +1,3 @@
+package
+
+public fun foo(/*0*/ x: kotlin.Any): kotlin.Unit