Make Archetype::{from_arrow, to_arrow} and friends tag compliant

[teh-cmc]

These methods were still ComponentName-based, which just won't work as we start introducing archetypes with multiple instances of the same component.

Note that these methods are very seldom used (only for tests, IIRC), so I went for the path of least resistance and took a few shortcuts.
We can build something sturdier later on if need be (I highly doubt it... in fact I expect these methods don't have that much time left to live).

• DNM: requires Autogenerate tagging-compliant descriptor methods for all archetypes #8643

[github-actions]

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Result	Commit	Link	Manifest
✅	1ecedd4	https://rerun.io/viewer/pr/8644	+nightly +main

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