FIR: Add test on delegated member with default param in overridden...

sensitive to the file processing order, therefore failing on the
current fir2ir at least with the new irBuiltIns

compiler/testData/codegen/box/delegation/withDefaultsMultipleFilesOrder.kt

@@ -0,0 +1,20 @@
+// FILE: lib.kt
+interface ResolutionScope {
+    fun getContributedDescriptors(s: String = "OK"): String
+}
+
+// processing deprecatedScopes.kt before scopes.kt should show that there is no problem in processing delegated members after fake overrides
+
+// FILE: deprecatedScopes.kt
+abstract class DeprecatedLexicalScope(a: LexicalScope) : LexicalScope by a
+
+// FILE: scopes.kt
+interface LexicalScope : ResolutionScope
+
+// FILE: main.kt
+class ScopeImpl : LexicalScope {
+    override fun getContributedDescriptors(s: String): String = s
+}
+class Impl : DeprecatedLexicalScope(ScopeImpl())
+
+fun box(): String = Impl().getContributedDescriptors()