[LL FIR] rename testdata to testData to avoid copyright generation

We exclude testData pattern from copyright scope

analysis/low-level-api-fir/testData/classId/localClassInsideSuperEntryCall.kt

@@ -0,0 +1,11 @@
+package one
+
+/* ClassId: one/Interface */interface Interface {
+    fun foo(param: String)
+}
+
+/* ClassId: one/ClassWithParameter */open class ClassWithParameter(i: Interface)
+
+/* ClassId: one/TopLevelClass */class TopLevelClass : ClassWithParameter(/* ClassId: null */object : Interface {
+    /* ClassId: null */class NestedClassFromAnonymousObject
+})