feat(events): Add internal event id to event metadata (#21074)

* add internal event id to event metadata

* fix formatting

* formatting

* rename source_event_id + use uuid v7 + add uuid as workspace dependency

* cargo fmt

* use derivative crate to ignore source_event_id field for PartialEq

* rebase + merge

* fix Cargo.toml file

* add protobuf parsing for event id field

* generate new test fixtures

* Update Cargo.lock

* add pre-v41 to native.rs test-suit + fix import re-ordering

* add pre-v41 tests for roundtrip_fixtures & decoding_matches