OpenAPI specs v240.8.0

OpenAPI specs from chat release v240.8.0.

• [VID-1699] control plane: disable, don't delete, SFUs whose Nomad allocation is unknown; re-enable on reconnect (PR: #20384, Author: @pojala)
• [VID-1760] Pin the GKE Datadog node agent to 7.84.6 so le="0.0" histogram buckets reach Datadog (PR: #20434, Author: @atoppi)
• [VID-1710] Daily digest cron for Humand Prod on us-east4:c8 (PR: #20052, Author: @pojala)
• [VID-1650] VEP: handle the SFU recording capture checkpoint event (kit v3.263.0) (PR: #20429, Author: @pojala)
• [CHA-6694] Bump europe-west4:c12 chat and chat-manager to v240.7.4 to ship the CHA-6694 /sync fix (PR: #20443, Author: @adityaalifn)
• [CHA-5592] fastupdate=off oneshot for message GIN indexes (PR: #19812, Author: @xicoalmeida)
• [CHA-3832] Give DeleteChannels a per-task default limit of 10 (PR: #20194, Author: @xicoalmeida)
• [CHA-6395] Deploy v240.7.4 to europe-west4 c8 (PR: #20441, Author: @nijeesh-stream)
• [MOD2-1787] Add remove_future_channels_ban to v2 unban (PR: #20450, Author: @mogita)
• [CHA-5299] Cover the out-of-module trees the infra chart pins read (PR: #17877, Author: @xicoalmeida)
• [CHA-5530] Make the on-call readiness check run: project env vars + Datadog key access (PR: #20440, Author: @Loschcode)
• [MOD2-1788] Enable keyframe video moderation on us-east4 adp (PR: #20455, Author: @jlustin)
• [FEEDS-2037] Bound own-follows lookups with an ordered follows index (PR: #20428, Author: @JimmyPettersson85)
• [AI-2784] Route every usage_alert event with two Sentry alerts (PR: #20453, Author: @kanat)
• [AI-2782] Ship the launch metrics to Datadog (PR: #20454, Author: @kanat)
• Release v240.8.0 (PR: #20458, Author: @stream-ci-bot)