OpenAPI specs v240.7.4

OpenAPI specs from chat release v240.7.4.

• [CHA-6711] Serve predefined filters and query performance analysis from the bun shard router (PR: #20416, Author: @adityaalifn)
• [CHA-6677] Count change-channel-type writes and fix campaign progress over-count (PR: #20424, Author: @hifaizsk)
• [INF-2223] Scale Paris staging cdn-proxy to zero (PR: #20431, Author: @razkevich)
• [FEEDS-1961] Read server-side GetActivity user_id as that user (PR: #20311, Author: @JimmyPettersson85)
• [VID-1757] Put video SFU NACK monitors on one 60-second grid (GKE and OCI) (PR: #20393, Author: @pojala)
• [FEEDS-1881] Drop unused follows indexes on europe-west4:c9 (PR: #20425, Author: @JimmyPettersson85)
• [INF-2421] Retire europe-west4:c4 CloudSQL instance (PR: #20436, Author: @guruwinderrishi)
• [CHA-5981] Stringify non-string path params in the Java SDK template (PR: #20418, Author: @nijeesh-stream)
• [INF-2344] Lower S3 cleanup mirror-off gate to 7 days (PR: #20435, Author: @guruwinderrishi)
• [CHA-6694] /sync returns 500 when last_sync_at >= now with watch=true (reversed DynamoDB BETWEEN) (PR: #20358, Author: @adityaalifn)
• [CHA-6395] Keep hidden channels for $or hidden true/false with members (PR: #20421, Author: @nijeesh-stream)
• [CHA-6709] Explain why messages offset is hidden from the spec (PR: #20422, Author: @mogita)
• [CHA-6358] Serve tikv read mode from TiKV only, clamping windows older than 14 days (PR: #20426, Author: @slavabobik)
• Release v240.7.4 (PR: #20438, Author: @stream-ci-bot)