build: `_routes.json` is not regenerated by `emptyOutDir: false.`

[akku1139]

build and cloudflare-pages set the Vite build.emptyOutDir to false.
e125070

vite-plugins/packages/build/src/base.ts

Line 38 in ee81be5

emptyOutDir: false,

This means that _routes.json is always in dist/,
so adding/removing files/directories to the public directory will not be applied to _routes.json.

vite-plugins/packages/build/src/adapter/cloudflare-pages/index.ts

Lines 30 to 33 in ee81be5

	// If _routes.json already exists, don't create it
	if (paths.some((p) => p.name === ROUTES_JSON_NAME)) {
	return
	} else {

However, when generating a client, emptyOutDir: false. is required.
https://github.com/honojs/vite-plugins/blob/main/packages/build/README.md#build-a-client

[akku1139]

so adding/removing files/directories to the public directory will not be applied to _routes.json.

Also, note that even if you remove a file/directory from public/ it still exists in dist/.

[yusukebe]

Hi @akku1139

Sorry for being late. I think this can be fixed with #270. Can you review this PR?