fix(vite): exclude packages from deno cache in prefresh (#3374)

When disabling `node_modules` directory in Deno, prefresh plugin
transforms files in ~/.cache/deno/npm/registry.npmjs.org/ directory,
causing an arcane error to occur:
preactjs/prefresh#124

After disabling this transform my site now works on updated fresh
version

I'm not sure if is the correct way to exclude this, but I don't see any
longer pattern that would work here

The cache is stored in $XDG_CACHE_HOME/deno/npm/$REGISTRY_HOST, where
only deno/npm part seems to be static

---------

Co-authored-by: Marvin Hagemeister <marvin@deno.com>

Author: CertainLach

packages/plugin-vite/src/mod.ts

@@ -174,7 +174,7 @@ export function fresh(config?: FreshViteConfig): Plugin[] {
     ...devServer(),
     prefresh({
       include: [/\.[cm]?[tj]sx?$/],
-      exclude: [/node_modules/],
+      exclude: [/node_modules/, /[\\/]+deno[\\/]+npm[\\/]+/],
       parserPlugins: [
         "importMeta",
         "explicitResourceManagement",