Fix SVG renderer not playing animation due to a regression from the tile cache discarding the context

[Keavon]

Fix regression introduced in #3722 that broke animation playback (and Pointer Position render input) in the SVG renderer path.

[gemini-code-assist]

Code Review

This pull request modifies the render_output_cache function to ensure the existing context is preserved during direct render fallbacks by replacing OwnedContextImpl::empty() with OwnedContextImpl::from(ctx.clone()). It also includes a minor cleanup of an iterator chain by removing an unnecessary into_iter() call. I have no feedback to provide.

[cubic-dev-ai]

No issues found across 1 file

Confidence score: 5/5

• Automated review surfaced no issues in the provided summaries.
• No files require special attention.