resolve the last few relevant pedantic clippy lints

src/api/client_server/filter.rs

src/api/client_server/keys.rs

src/api/client_server/media.rs

src/api/client_server/membership.rs

src/api/client_server/report.rs

src/api/client_server/sync.rs

src/api/ruma_wrapper/axum.rs

src/api/server_server.rs

src/database/abstraction/rocksdb.rs

src/database/abstraction/sqlite.rs

src/database/key_value/rooms/search.rs

src/database/key_value/rooms/short.rs

src/database/key_value/rooms/state_accessor.rs

src/service/admin/room_moderation.rs

src/service/media/mod.rs

src/service/rooms/event_handler/mod.rs

src/service/rooms/spaces/mod.rs

src/service/rooms/state/mod.rs

src/service/rooms/state_accessor/mod.rs

src/service/users/mod.rs