FIR: Unignore all Fir2IrText tests on context receivers

compiler/testData/ir/irText/declarations/contextReceivers/contextualFunctionConversion.fir.kt.txt

@@ -0,0 +1,14 @@
+fun withContext(f: Function1<String, String>): String {
+  return f.invoke(p1 = "OK")
+}
+
+fun callWithContext(f: Function1<String, String>): String {
+  return withContext(f = f)
+}
+
+fun box(): String {
+  return callWithContext(f = local fun <anonymous>(s: String): String {
+    return s
+  }
+)
+}