Prevent flaky roundtrips in rerun rrd compare

[teh-cmc]

Store-side compaction has election heuristics that can yield different results depending on the order in which the chunks arrive.
This can make some cross-language roundtrip tests flaky.

This PR makes sure to disabled store-side compaction when running RRD comparison tests.

• DNM: requires Automatically generate partial update APIs for eager archetypes #8647

[github-actions]

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Result	Commit	Link	Manifest
✅	bbe01a7	https://rerun.io/viewer/pr/8648	+nightly +main

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[Wumpf]

I'm rather surprised that compaction isn't deterministic. Is the problem that two rrd files with differing message order should still yield the same store from the pov of a comparision, but the fact that data comes in different order changes compaction?