Reenable SBO in any_sender and friends

[msimberg]

Attempting to reenable SBO without any UB, but this needs more testing. We disabled SBO in the past because it was causing issues at least on LUMI, and I haven't re-tested it with these changes yet.

Based on #1280.

[codacy-production]

Coverage summary from Codacy

See diff coverage on Codacy

Coverage variation	Diff coverage
✅ +0.02% (target: -1.00%)	✅ 90.91% (target: 90.00%)

Coverage variation details

	Coverable lines	Covered lines	Coverage
Common ancestor commit (04d79b2)	18217	13761	75.54%
Head commit (818c420)	18217 (+0)	13764 (+3)	75.56% (+0.02%)

Coverage variation is the difference between the coverage for the head and common ancestor commits of the pull request branch: <coverage of head commit> - <coverage of common ancestor commit>

Diff coverage details

	Coverable lines	Covered lines	Diff coverage
Pull request (#1281)	11	10	90.91%

Diff coverage is the percentage of lines that are covered by tests out of the coverable lines that the pull request added or modified: <covered lines added or modified>/<coverable lines added or modified> * 100%

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