[13.x] Restore the container instance after route:cache boots a fresh application

[lazerg]

getFreshApplication() boots a throwaway application, and Application::__construct points Container::getInstance() at it. Since #61346 the facade application is restored afterwards but the container instance is not, so app() and Container::getInstance() keep resolving out of the discarded application while facades resolve out of the live one. Under optimize that breaks view:cache, which runs right after route:cache in the same process and builds the Blade engine from the container.

This restores the container instance alongside the facade application. On 13.29 both pointed at the throwaway application, so the split only appeared in 13.30.

Fixes #61401