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

We exclude testData pattern from copyright scope

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

@@ -0,0 +1,12 @@
+fun <T> magic(): T = null!!
+
+class Q {
+    fun <E, F> f<caret>oo() = {
+        class C<G> {
+            val e: E = magic()
+            val f: F = magic()
+            val g: G = magic()
+        }
+        C<F>()
+    }
+}