Fix and test all known HybridResults issues from 0.18

[teh-cmc]

This fixes all known bugs/regressions introduced in the visualizer-query layer (aka HybridResults) in 0.18, and adds related checklists for futureproof-ness.

As always, this is "just" a matter of carefully overriding row indices when merging data from multiple sources with different priorities.

• Fixes Intra-timestamps join broken for spatial views on 0.18 #7227
• Partially reverts Ignore RowId in zipping iterators #7199

TODO:

• check_latest_at_partial_updates passing
• check_latest_at_partial_updates comparison with 0.17
• check_range_partial_updates passing
• check_range_partial_updates comparison with 0.17
  0.17 was in the wrong on this one!
• check_static_override passing
• check_plot_overrides passing
• check_overrides_2d passing
• all standard examples behaving sanely
• cargo t --all-features --all
• plot dashboard not doing anything weird

Checklist

• I have read and agree to Contributor Guide and the Code of Conduct
• I've included a screenshot or gif (if applicable)
• I have tested the web demo (if applicable):
  • Using examples from latest main build: rerun.io/viewer
  • Using full set of examples from nightly build: rerun.io/viewer
• The PR title and labels are set such as to maximize their usefulness for the next release's CHANGELOG
• If applicable, add a new check to the release checklist!
• If have noted any breaking changes to the log API in CHANGELOG.md and the migration guide

• PR Build Summary
• Recent benchmark results
• Wasm size tracking

To run all checks from main, comment on the PR with @rerun-bot full-check.