[fix] ensure that editing app.html reloads open dev page

[dominikg]

fixes #7942

the vite client assumes that changes to html files should only trigger a full reload if they are named index.html and the path to the file matches the browser path. kit uses src/app.html by default which fails that check.

so we send another full-reload event to the client without a path - this forces it's hand.

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Latest commit: 4452d92

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@sveltejs/kit	Patch

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[lukaszpolowczyk]

I understand correctly that this partially solves my rejected problem?
#6806 (comment)

Loading a package from node_modules still fails to load in app.html.