FIR: fix hasTopLevelClassOf optimization in deserialized provider

Before this commit, we answered 'no top level class' if Java class finder
could not calculate known class names. However, it's incorrect,
because this situation means 'don't actually know'.

To precise semantics, function name was also inverted

idea/testData/fir/multiModule/withStdlib/jvm_dep(stdlib)/Some.kt

@@ -0,0 +1 @@
+val someList = listOf(1, 2, 3)

idea/testData/fir/multiModule/withStdlib/jvm_dep(stdlib)/Some.txt

@@ -0,0 +1,3 @@
+FILE: Some.kt
+    public final val someList: R|kotlin/collections/List<kotlin/Int>| = R|kotlin/collections/listOf|<R|kotlin/Int|>(Int(1), Int(2), Int(3))
+        public get(): R|kotlin/collections/List<kotlin/Int>|