refactor: remove `experimental.transformHiresSourcemap` (#8055) Removes the `experimental.transformHiresSourcemap` option after successful testing. Boundary mode is now always enabled for transform source map generation. **Breaking change:** ```diff export default { experimental: { - transformHiresSourcemap: true | false | 'boundary' } } ``` **Changes:** - Remove option from TypeScript types and validation - Remove `SourcemapHires` enum and `transform_hires_sourcemap` field from Rust `ExperimentalOptions` - Hardcode `string_wizard::Hires::Boundary` in `TransformPluginContext::create_sourcemap()` and transform hooks - Remove now-unused `PluginDriver.options` field - Regenerate bindings and schema

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> > ---- > > *This section details on the original issue you should resolve* > > Remove `experimental.transformHiresSourcemap` > `experimental.transformHiresSourcemap` is a performance improvement option, so we can remove it once we test it. > > We tested this out and didn't get any error reports. We can remove this option. > > ## Comments on the Issue (you are @copilot in this section) > > > >

- Fixes rolldown/rolldown#7477 --- ✨ Let Copilot coding agent [set things up for you](https://github.com/rolldown/rolldown/issues/new?title=✨+Set+up+Copilot+instructions&body=Configure%20instructions%20for%20this%20repository%20as%20documented%20in%20%5BBest%20practices%20for%20Copilot%20coding%20agent%20in%20your%20repository%5D%28https://gh.io/copilot-coding-agent-tips%29%2E%0A%0A%3COnboard%20this%20repo%3E&assignees=copilot) — coding agent works faster and does higher quality work when set up for your repo.

Remove experimental.transformHiresSourcemap #7477

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Remove `experimental.transformHiresSourcemap` #7477