Add test scenario for splat operator in rescue clauses

scenario/control/rescue-assign.rb

@@ -6,11 +6,20 @@ def foo(n)
   e.message
 end
 
+def bar(n)
+  raise if n != 0
+  n.to_s
+rescue *[StandardError] => e
+  e.message
+end
+
 foo(1)
+bar(1)
 
 ## diagnostics
 
 ## assert
 class Object
   def foo: (Integer) -> String
+  def bar: (Integer) -> String
 end

scenario/control/rescue-splat.rb

@@ -0,0 +1,15 @@
+## update
+def foo
+  begin
+    :a
+  rescue *[StandardError]
+    :b
+  end
+end
+
+foo
+
+## assert
+class Object
+  def foo: -> (:a | :b)
+end