Make Message received receipts stateless

[GrayHatter]

This change is

[nurupo]

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Reviewed 6 of 6 files at r1, 5 of 5 files at r2.
Review status: all files reviewed at latest revision, all discussions resolved, some commit checks broke.

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Comments from Reviewable

[iphydf]

what a shitty tool reviewable is :\ and it's still the best.

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Review status: all files reviewed at latest revision, all discussions resolved.

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Comments from Reviewable

[iphydf]

Reviewed 6 of 6 files at r1, 5 of 5 files at r2.
Review status: all files reviewed at latest revision, all discussions resolved, some commit checks pending.

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Comments from Reviewable

[iphydf]

Reviewed 1 of 1 files at r3.
Review status: all files reviewed at latest revision, all discussions resolved, some commit checks pending.

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Comments from Reviewable