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

We exclude testData pattern from copyright scope

analysis/low-level-api-fir/testData/partialRawBuilder/paramemtersCatching.txt

@@ -0,0 +1,9 @@
+public? final? fun test/classes/Outer.foo(): R|kotlin/Unit| {
+    lval <local>/z: <implicit> = object : R|kotlin/Any| {
+        private constructor(): R|<anonymous><X>| {
+            super<R|kotlin/Any|>()
+        }
+
+    }
+
+}