[Wasm] Fix js interop closure signature

Before we used IrType.render() which is not unique.
This changes adds a proper serialization of adapter signature to string.

compiler/testData/codegen/boxWasmJsInterop/lambdaAdapterNameClash.kt

@@ -0,0 +1,11 @@
+// TARGET_BACKEND: WASM
+
+// Type of functions `(T) -> T` are rendered the same way in IrType::render
+fun <T : JsAny?> foo(f: (T) -> T, x: Int): Int = js("f(x)")
+fun <T : JsAny?> foo(f: (T) -> T, x: String): String = js("f(x)")
+
+fun box(): String {
+    if (foo<JsAny>({ it }, 10) != 10) return "Fail 1"
+    if (foo<JsAny>({ it }, "20") != "20") return "Fail 2"
+    return "OK"
+}