More SVOM notice types being ingested than expected

Looking at a set of SVOM examples in emfollow-test we can see more notice types than expected: https://gracedb-test.ligo.org/latest/?query=SVOM&query_type=E&get_neighbors=&results_format=

We only expected ECLAIRS_WAKEUP, but see other types (e.g. SLEWING, NOT_SLEWING, etc.) with failed sky map creation. We should find why we are ingesting these additional notice types and restrict the ingestion to the single type (put filter in external_triggers.py or restrict credentials).