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

We exclude testData pattern from copyright scope

analysis/low-level-api-fir/testData/getOrBuildFir/expressions/throwExpressionScript.txt

@@ -0,0 +1,16 @@
+KT element: KtThrowExpression
+FIR element: FirThrowExpressionImpl
+FIR source kind: KtRealSourceElementKind
+
+FIR element rendered:
+throw R|java/lang/IllegalStateException.IllegalStateException|()
+
+FIR FILE:
+FILE: [ResolvedTo(IMPORTS)] throwExpressionScript.kts
+    context(<script>@R|kotlin/script/templates/standard/ScriptTemplateWithArgs|)
+    SCRIPT: [ResolvedTo(TYPES)] 
+        [ResolvedTo(RAW_FIR)] lval args: R|kotlin/Array<kotlin/String>|
+
+        public final [ResolvedTo(BODY_RESOLVE)] fun x(): R|kotlin/Unit| {
+            throw R|java/lang/IllegalStateException.IllegalStateException|()
+        }