OpenAPI specs v241.4.0

OpenAPI specs from chat release v241.4.0.

• [FEEDS-2223] Remove duplicate, dead and weak feeds controller tests (PR: #20660, Author: @JimmyPettersson85)
• [FEEDS-1961] Pin us-east4 solaris and c14 chat to v241.3.1 (PR: #20678, Author: @JimmyPettersson85)
• [INF-2438] Record the S3 mirror-off time for ohio (PR: #20684, Author: @guruwinderrishi)
• [INF-2450] Stop CDN dual-write to S3 for the paris bucket (staging) (PR: #20687, Author: @guruwinderrishi)
• [CHA-6763] Sync c14, solaris and europe-west4 c1 image tags with production (PR: #20686, Author: @magiconair)
• [CHA-6751] Translate slash command output, not the command text (PR: #20665, Author: @Acconut)
• [FEEDS-2232] Keep moderation-removed activities out of activity_count (PR: #20693, Author: @JimmyPettersson85)
• Release v241.4.0 (PR: #20695, Author: @stream-ci-bot)