Fix ARM64 paddlepaddle image builder bug (#4228)
<!-- CURSOR_SUMMARY -->
> [!NOTE]
> **Low Risk**
> Changes are limited to dependency markers, uv lock/environment
configuration, and a patch version bump; runtime code paths are
unaffected, with the main risk being platform-specific install
resolution differences.
>
> **Overview**
> **Fixes Docker ARM64 image builds** by preventing installation of
`paddlepaddle` on `linux/aarch64` via a `platform_machine != 'aarch64'`
marker in the `paddleocr` extra.
>
> Updates uv configuration to generate/resolve the lockfile for both
Linux `x86_64` and `aarch64` using `[tool.uv].required-environments`,
and refreshes `uv.lock` marker logic accordingly. Bumps the package
version to `0.19.1` and records the fix in `CHANGELOG.md`.
>
> <sup>Written by [Cursor
Bugbot](https://cursor.com/dashboard?tab=bugbot) for commit
45e67fb65958ce87ddaa6318bbee657e5934c0bb. This will update automatically
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[here](https://cursor.com/dashboard?tab=bugbot).</sup>
<!-- /CURSOR_SUMMARY -->
