[FIR-TEST] Add new testdata generated after changes in previous commit

compiler/testData/diagnostics/testsWithStdLib/experimental/classMembersOverlyExperimental.fir.kt

@@ -0,0 +1,36 @@
+// !USE_EXPERIMENTAL: kotlin.Experimental
+// FILE: api.kt
+
+package api
+
+@Experimental(Experimental.Level.WARNING)
+@Target(AnnotationTarget.CLASS, AnnotationTarget.FUNCTION, AnnotationTarget.PROPERTY)
+annotation class ExperimentalAPI
+
+@ExperimentalAPI
+class C {
+    @ExperimentalAPI
+    fun function() {}
+
+    @ExperimentalAPI
+    val property: String = ""
+
+    @ExperimentalAPI
+    class Nested {
+        @ExperimentalAPI
+        fun nestedFunction() {}
+    }
+}
+
+// FILE: usage.kt
+
+package usage
+
+import api.*
+
+fun use() {
+    val c: C = C()
+    c.function()
+    c.property
+    C.Nested().nestedFunction()
+}