[Docker] `ViteRuby#dev_server_running?` always return `false` when rails and vite run in different containers with `skipProxy: true`

**Is your feature request related to a problem? Please describe.**

`ViteRuby#dev_server_running?` always return `false` when rails and vite run in different containers with `skipProxy: true`. We can't set the `VITE_RUBY_HOST` to the name of the `vite` container, since it need to be something like `localhost` for the dev server to be reachable from the browser, because we are skipping the proxy. With this configuration `ViteRuby#dev_server_running?` isn't able to resolve the dev server and assume that it is not running.

**Describe the solution you'd like**

One solution could be to have a config/env to set the reachable host from the backend code e.g. `VITE_RUBY_HOST_FROM_BACKEND` and use it here:
https://github.com/ElMassimo/vite_ruby/blob/6249f3b8385c89c6e5f05ad94384cae53d1e5b5d/vite_ruby/lib/vite_ruby.rb#L91

**Describe alternatives you've considered**

Instead of checking network to see if the dev server is running, maybe we could create a file somewhere when starting the dev server and remove it when closing the dev server. To know if the dev server is running we check if the file exist or not, but that solution come with other issues.

**Additional context**

Here's a monkey patch we are using to bypass the current limitation:

```rb
module MonkeypatchDevServerRunning
module InstanceMethods
# original method: https://github.com/ElMassimo/vite_ruby/blob/6249f3b8385c89c6e5f05ad94384cae53d1e5b5d/vite_ruby/lib/vite_ruby.rb#L84-L98
def dev_server_running?
return super unless config.skip_proxy
return false unless run_proxy?
return @running if defined?(@running) && Time.now - @running_checked_at < 1

begin
Socket.tcp(ENV["VITE_RUBY_HOST_FROM_BACKEND"] || config.host, config.port, connect_timeout: config.dev_server_connect_timeout).close
@running = true
rescue StandardError
@running = false
ensure
@running_checked_at = Time.now
end
end
end

class << self
def apply_patch
const = find_const
mtd = find_method(const)

unless const && mtd && mtd.arity == 0
raise "Could not find class or method when patching ViteRuby#dev_server_running?. Please investigate."
end

unless vite_ruby_version_ok?
puts "WARNING: It looks like ViteRuby has been upgraded since ViteRuby#dev_server_running? was monkeypatched in #{__FILE__}. Please reevaluate the patch."
end

const.prepend(InstanceMethods)
end

private

def find_const
Kernel.const_get('ViteRuby')
rescue NameError
end

def find_method(const)
return unless const
const.instance_method(:dev_server_running?)
rescue NameError
end

def vite_ruby_version_ok?
version = Gem::Version.create(ViteRuby::VERSION)

# The skipProxy config was added in version 3.2.12
# see: https://github.com/ElMassimo/vite_ruby/compare/vite_ruby@3.2.11...vite_ruby@3.2.12
version >= "3.2.12" && version < "4.0.0"
end
end
end

# ...

MonkeypatchDevServerRunning.apply_patch
```