Bug: route pagination error when delete the route item in the last page

[liuxiran]

Issue description

when delete last item in the route list , there will no data rendered in the route list, we should update the page query item

Expected behavior

How to Reproduce

1. there are 11 routes, and page size is 10
2. turn to the second page, delete the last route

Screenshots

No response

Environment

• apisix version (cmd: apisix version): null
• OS (cmd: uname -a): macOS
• OpenResty / Nginx version (cmd: nginx -V or openresty -V): null
• etcd version, if have (cmd: run etcd --version): null
• apisix-dashboard version, if have: 2.8
• Browser version, if have: chrome

Additional context

No response

[freecodelover]

I can reproduce it too.
And I see it's requesting such a URL /apisix/admin/routes?label=&page=2&page_size=10 after deleting the last router.

But the page number is changed to 1 not the previous 2, so it is confusing.

I think it's better to use the page value in the URL.

[oil-oil]

Please assign this task to me and I will fix it.