logging: only return ISE reasons in API responses when in dev or test mode

lib/pleroma/web/views/error_view.ex

@@ -13,7 +13,11 @@ defmodule Pleroma.Web.ErrorView do
   def render("500.json", assigns) do
     Logger.error("Internal server error: #{inspect(assigns[:reason])}")
 
-    %{errors: %{detail: "Internal server error", reason: inspect(assigns[:reason])}}
+    if Mix.env() != :prod do
+      %{errors: %{detail: "Internal server error", reason: inspect(assigns[:reason])}}
+    else
+      %{errors: %{detail: "Internal server error"}}
+    end
   end
 
   # In case no render clause matches or no