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

We exclude testData pattern from copyright scope

analysis/low-level-api-fir/testData/contextCollector/smartCasts/extensionReceiver.txt

@@ -0,0 +1,44 @@
+Tower Data Context:
+    Element 0
+        Scope: FirDefaultStarImportingScope
+    Element 1
+        Scope: FirDefaultSimpleImportingScope
+    Element 2
+        Scope: FirExplicitStarImportingScope
+    Element 3
+        Scope: FirDefaultSimpleImportingScope
+    Element 4
+        Scope: FirDefaultSimpleImportingScope
+    Element 5
+        Scope: FirPackageMemberScope
+    Element 6
+        Scope: FirExplicitSimpleImportingScope
+    Element 7
+        Scope: FirLocalScope
+    Element 8
+        Implicit receiver:
+            FirNamedFunctionSymbol public final fun R|kotlin/Any|.test(): R|kotlin/Unit|
+                Type: Foo
+    Element 9
+        Scope: FirLocalScope
+    Element 10
+        Scope: FirLocalScope
+Smart Casts:
+    FirNamedFunctionSymbol public final fun R|kotlin/Any|.test(): R|kotlin/Unit|
+    Types:
+        Foo
+        kotlin/Any
+
+FILE: [ResolvedTo(IMPORTS)] extensionReceiver.kt
+    public abstract [ResolvedTo(STATUS)] interface Foo : R|kotlin/Any| {
+    }
+    public final [ResolvedTo(BODY_RESOLVE)] fun R|kotlin/Any|.test(): R|kotlin/Unit| {
+        when () {
+            (this@R|/test| is R|Foo|) ->  {
+                R|/consume|(this@R|/test|)
+            }
+        }
+
+    }
+    public final [ResolvedTo(CONTRACTS)] fun consume([ResolvedTo(CONTRACTS)] obj: R|Foo|): R|kotlin/Unit| {
+    }