FIR: Fix resolution for invokes on class qualifiers

compiler/fir/analysis-tests/testData/resolve/callResolution/companionInvoke.kt

@@ -0,0 +1,9 @@
+internal class Method<out T : String?>private constructor(val name: String, val signature: T) {
+    companion object {
+        operator fun invoke(name: String): Method<String?> = TODO()
+    }
+}
+
+fun foo() {
+    Method("asd")
+}