With the new major version of vite, some path resolution did not work so
we update our vite config to resolve properly paths starting by 'src'.
Furthermore there were some deprecation warning about the use of cjs
files as vite configuration so we use 'mts' extension for all vite
config files in react package to allow vite to detect them as
ES Modules.
Since the migration to Vite 5 we had the "The CJS build of Vite's
Node API is deprecated" error ocurring during compilation.
We needed to rename to .mts the vite config file in order for it
to acknowledge that we are using the Node ESM API, this is needed
because we do not set "type": "module" in package.json because
we need to support CJS too.
