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

We exclude testData pattern from copyright scope

analysis/low-level-api-fir/testData/contextCollector/scripts/insideTopLevelFunction.kts

@@ -0,0 +1,20 @@
+/*
+ * Copyright 2010-2023 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+fun before_Fun() {}
+
+val before_Val = 10
+
+class Before_OtherClass
+
+fun usage(foo: Int) {
+    <expr>foo</expr>
+}
+
+fun after_Fun() {}
+
+val after_Val = 10
+
+class After_OtherClass