see:
- https://github.com/matrix-org/matrix-js-sdk/pull/4329
- https://github.com/element-hq/synapse/blob/568051c0f07393b786b9d813a1db53dd332c9fc2/synapse/handlers/pagination.py#L639
- https://matrix.to/#/!n8DKU1BeeJilOJXDPr:seirdy.one/$gvGF7GuPrLPR8nHg4UiHvP-ZVwuiMkYS8O6VlsDCW9w?via=awawawawawawawawawawawawawawawawawawawawawawawawawawawawawawaw.gay&via=transfem.dev&via=matrix.org



Signed-off-by: strawberry <strawberry@puppygock.gay>