fix: workaround for sourcemap warnings

[frandiox]

Description

Closes #140

The sourcemaps fix in Vite is not enough for us because that id parameter contains the querystring ?no-proxy, and it breaks the sourcemap.

This PR implements a workaround on our side until it is fixed in Vite (I'll open PRs there soon).

Apart from that, looks like react-ssr-prepass soucemap is broken so this also ignores it. I tried to read the proper sourcemap from a file next to the source code, but looks like it crashes in Jest and build... that's why Vite is ignoring it, probably.

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[frandiox]

PR in Vite here: vitejs/vite#5760
Not sure if it will be approved, though, perhaps breaks something else.