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

We exclude testData pattern from copyright scope

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

@@ -0,0 +1,12 @@
+fun resolve<caret>Me() {
+    receive(withGetterAndSetter)
+    withGetterAndSetter = 123
+}
+
+fun receive(value: Int) {}
+
+var withGetterAndSetter: Int = 42
+    get() = field
+    set(value) {
+        field = value
+    }