chore(viewer): bump to Rerun 0.34 (egui 0.35, arrow 58)

[alvgaona]

Summary

Upgrades the viewer to Rerun 0.34 (egui 0.35, arrow 58) and repins rewire-extras to v0.5.0. Part of the cross-repo Rerun 0.33 to 0.34 upgrade (REW-183); depends on rewire-extras v0.5.0, which is already released.

Changes

• egui / egui_extras / eframe 0.34 to 0.35; all re_* 0.33 to 0.34; arrow 57 to 58 (rerun 0.34 uses arrow 58)
• rewire-extras repinned to tag v0.5.0; dropped re_byte_size (no longer needed)
• Adapted 3 re_viewer_context / re_query API changes across the Topics/Nodes/Diagnostics views:
  • ViewState::heap_size_bytes is now a required method (moved into impl ViewState; removed the standalone impl SizeBytes)
  • QueryCache::latest_at gained a leading ChunkTrackingMode arg (passed ::Ignore — matches prior behavior for a fully in-memory local store)
  • visualizer_data now returns Option<&T> (handled with an empty-slice fallback)
• Fixed egui 0.35 deprecation: Panel::show_inside renamed to show
• Adds a PR template for this repo

Related

• REW-183. Depends on rewire-extras v0.5.0.

Checklist

• PR title follows Conventional Commits
• cargo fmt --check is clean
• cargo clippy --all-targets -- -D warnings is clean (native)
• cargo test passes (doc-tests; repo has no unit tests)
• Public items have /// docs

Breaking changes

None to the gRPC ports or the bridge/viewer protocol.