On local dev server vite will overeagerly return 404 if there is just one path fragment and it contains a period

[tstriker]

Describe the bug

On local dev server vite will overeagerly return 404 if there is just one path fragment and it contains a period, e.g. "/example.com". I'm guessing that this is because of the path parsing logic deciding that the fragment looks like something that should be served by the filesystem.

Reproduction

• Try accessing /examplecom on the vanilla dev server - things work as expected, the path is intercepted and passed to the browser (no effect)
• Now try accessing /example.com - you'll get a 404

Note that adding a trailing slash /example.com/ will once again work.

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[anncwb]

Closing as duplicate of #2415