[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/propertyReferenceExpression.txt

@@ -0,0 +1,22 @@
+KT element: KtCallableReferenceExpression
+FIR element: FirCallableReferenceAccessImpl
+FIR source kind: KtRealSourceElementKind
+
+FIR element rendered:
+Q|A|::R|/A.foo|
+
+FIR FILE:
+FILE: [ResolvedTo(IMPORTS)] propertyReferenceExpression.kt
+    public final [ResolvedTo(STATUS)] class A : R|kotlin/Any| {
+        public [ResolvedTo(STATUS)] [ContainingClassKey=A] constructor(): R|A| {
+            LAZY_super<R|kotlin/Any|>
+        }
+
+        public final [ResolvedTo(CONTRACTS)] fun foo(): R|kotlin/Unit| {
+        }
+
+    }
+    public? final? [ResolvedTo(RAW_FIR)] val y: A = LAZY_EXPRESSION
+        public? [ResolvedTo(RAW_FIR)] get(): A
+    public final [ResolvedTo(BODY_RESOLVE)] val x: R|kotlin/reflect/KFunction1<A, kotlin/Unit>| = Q|A|::R|/A.foo|
+        public [ResolvedTo(BODY_RESOLVE)] get(): R|kotlin/reflect/KFunction1<A, kotlin/Unit>|