FIR: Add test for get class + let in delegation

compiler/fir/analysis-tests/testData/resolveWithStdlib/delegates/getClassLet.kt

@@ -0,0 +1,11 @@
+import kotlin.reflect.KClass
+
+class SomeClass
+
+inline fun <reified K> foo(klass: KClass<*>): K = null!!
+
+val some: Map<String, String> by lazy {
+    SomeClass::class.let {
+        foo(it)
+    }
+}