Merge branch 'release-v1.57' into develop

changelog.d/11881.feature

-Send device list changes to application services as specified by [MSC3202](https://github.com/matrix-org/matrix-spec-proposals/pull/3202), using unstable prefixes. The `msc3202_transaction_extensions` experimental homeserver config option must be enabled and `org.matrix.msc3202: true` must be present in the application service registration file for device list changes to be sent. The "left" field is currently always empty.
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changelog.d/12040.feature

-Optimise fetching large quantities of missing room state over federation.

changelog.d/12115.bugfix

-Fix a long-standing bug that updating the server notices user profile (display name/avatar URL) in the configuration would not be applied to pre-existing rooms. Contributed by Jorge Florian.

changelog.d/12165.misc

-Remove lingering unstable references to MSC2403 (knocking).

changelog.d/12191.misc

-Avoid trying to calculate the state at outlier events.

changelog.d/12193.misc

-Omit sending "offline" presence updates to application services after they are initially configured.
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changelog.d/12209.misc

-Switch to using a sequence to generate AS transaction IDs. Contributed by Nick Beeper. If running synapse with a dedicated appservice worker, this MUST be stopped before upgrading the main process and database.

changelog.d/12235.bugfix

-Fix a long-standing bug where events from ignored users were still considered for bundled aggregations.

changelog.d/12251.feature

-Offload the `update_client_ip` background job from the main process to the background worker, when using Redis-based replication.

changelog.d/12252.feature

-Move `update_client_ip` background job from the main process to the background worker.
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changelog.d/12267.misc

-Add missing type hints for storage.

changelog.d/12271.doc

-Clarify documentation for running SyTest against Synapse, including use of Postgres and worker mode.
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changelog.d/12280.misc

-Add missing type definitions for scripts in docker folder. Contributed by Jorge Florian.

changelog.d/12293.removal

-Remove the unused and unstable `/aggregations` endpoint which was removed from [MSC2675](https://github.com/matrix-org/matrix-doc/pull/2675).

changelog.d/12295.misc

-Move [MSC2654](https://github.com/matrix-org/matrix-doc/pull/2654) support behind an experimental configuration flag.

changelog.d/12302.feature

-Add a module callback to react to new 3PID (email address, phone number) associations.

changelog.d/12310.feature

-Add a configuration option to remove a specific set of rooms from sync responses.

changelog.d/12315.doc

-Document the behaviour of `LoggingTransaction.call_after` and `LoggingTransaction.call_on_exception` methods when transactions are retried.

changelog.d/12316.misc

-Avoid trying to calculate the state at outlier events.