fix: disable oxc transformer for rolldown-vite compatibility

[Mimori256]

Description

Add oxc: false to the Vite config hook to suppress the warning emitted by rolldown-vite.

rolldown-vite replaces esbuild with Oxc as the default transformer, so esbuild: false alone no longer disables the default transformation and causes the following
warning:

  esbuild option is set to false, but oxc option was not set to false. esbuild: false does not have
  effect any more. If you want to disable the default transformation, which is now handled by Oxc, please
  set oxc: false instead.

esbuild: false is kept for compatibility with standard Vite.

Linked Issues

fixes #210

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