Reload routes after configuring resource
Reload routes after configuring resource

Fixes

```
rspec \
  ./spec/unit/authorization/index_overriding_spec.rb[1:1] \
  ./spec/unit/resource/routes_spec.rb[1:1:3] \
  --seed 50491
```

SoftSwiss/active_admin,maysam/activeadmin,vytenis-s/activeadmin,mrjman/activeadmin,mrjman/activeadmin,gogovan/activeadmin,siutin/activeadmin,deivid-rodriguez/activeadmin,siutin/activeadmin,waymondo/active_admin,cmunozgar/activeadmin,siutin/activeadmin,vytenis-s/activeadmin,vraravam/activeadmin,javierjulio/activeadmin,deivid-rodriguez/activeadmin,wspurgin/activeadmin,activeadmin/activeadmin,maysam/activeadmin,varyonic/activeadmin,maysam/activeadmin,gogovan/activeadmin,waymondo/active_admin,activeadmin/activeadmin,activeadmin/activeadmin,mauriciopasquier/active_admin,javierjulio/activeadmin,varyonic/activeadmin,deivid-rodriguez/activeadmin,vytenis-s/activeadmin,vraravam/activeadmin,cmunozgar/activeadmin,waymondo/active_admin,mauriciopasquier/active_admin,mrjman/activeadmin,varyonic/activeadmin,vraravam/activeadmin,mauriciopasquier/active_admin,javierjulio/activeadmin,wspurgin/activeadmin,wspurgin/activeadmin,SoftSwiss/active_admin,SoftSwiss/active_admin,cmunozgar/activeadmin,gogovan/activeadmin