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

We exclude testData pattern from copyright scope

analysis/low-level-api-fir/testData/fileStructure/withoutNameScript.kts

@@ -0,0 +1,29 @@
+/* RootScriptStructureElement */fun (a: Int = 1): String = "str"/* DeclarationStructureElement */
+
+fun () {/* DeclarationStructureElement */
+
+}
+
+val : Int = 4/* DeclarationStructureElement */
+
+var : Int/* DeclarationStructureElement */
+    get() = 4
+    set(value) {
+
+    }
+
+class A {/* ClassDeclarationStructureElement */
+    fun (a: Int = 1): String = "str"/* DeclarationStructureElement */
+
+    fun () {/* DeclarationStructureElement */
+
+    }
+
+    val : Int = 4/* DeclarationStructureElement */
+
+    var : Boolean/* DeclarationStructureElement */
+        get() = true
+        set(value) {
+
+        }
+}