fix(task): treat all open errors as NotFound

[branchseer]

https://github.com/oxc-project/oxc/actions/runs/19465327960/job/55698857358

[vite+] run error: [Error: IO error: The filename, directory name, or volume label syntax is incorrect. (os error 123) at AbsolutePath("D:\\a\\oxc\\oxc\\napi/transform/node_modules/node:fs/index.js")] {
  code: 'GenericFailure'
}

[branchseer]

• fix(task): treat all open errors as NotFound #40 👈 (View in Graphite)
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