This PR adds a comment when `useLegacyNxPlugin` is used so users know
what it is, and how they can remove it.
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## Current Behavior
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## Expected Behavior
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## Related Issue(s)
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merged. -->
Fixes #
This PR introduces functionality for users who currently use the
`withNx` and `withReact` plugins in their webpack configuration to
migrate to the `NxAppWebpackPlugin`.
The `nxUseLegacyPlugin` wraps the legacy style function so that it
continues to work with the standardized generated webpack config.
By implementing this change, the aim is to provide a consistent method
for users opting to transition to inferred targets. This ensures a
smoother migration process, offering better integration and reducing
potential configuration complexities.
