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

We exclude testData pattern from copyright scope

analysis/low-level-api-fir/testData/lazyResolve/annotationOnLocalClassScript.kts

@@ -0,0 +1,9 @@
+package one.two
+
+annotation class AnotherAnnotation
+annotation class KotlinAnnotation(val s: AnotherAnnotation)
+
+fun resol<caret>veMe() {
+    @KotlinAnnotation(AnotherAnnotation())
+    class LocalClass
+}