[SamWithReceiver] Fix test configuration and testdata

plugins/sam-with-receiver/testData/diagnostics/samConversionSimpleWithoutAnnotation.fir.txt

@@ -0,0 +1,18 @@
+package
+
+public fun test(): kotlin.Unit
+
+public open class Exec {
+    public constructor Exec()
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public/*package*/ open fun exec(/*0*/ sam: Sam!): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}
+
+public interface Sam {
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public abstract fun run(/*0*/ a: kotlin.String!): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}