showApiKeysLastUsed feature flag is off for all users - "Last used" indicators not visible during legacy key migration

Summary The "Last used" indicators for API keys are not visible in the dashboard, despite being explicitly referenced in both the [API keys documentation]( and the in-dashboard migration guide. Steps to Reproduce 1. Go to Settings → API Keys on any project 2. The docs and in-dashboard migration guide both say to "watch the Last used indicators" before deactivating legacy keys 3. No such indicators are visible Root Cause (traced through the codebase) The feature is fully implemented but gated behind useFlag('showApiKeysLastUsed') which returns false for my account. Relevant files: • apps/studio/components/interfaces/APIKeys/APIKeyRow.tsx • apps/studio/components/interfaces/APIKeys/SecretAPIKeys.tsx • apps/studio/components/ui/ProjectSettings/DisplayApiSettings.tsx • packages/common/feature-flags.tsx History of the flag: • [PR #41209]( (Dec 9, 2025) set useFlag('HideApiKeyLastUsed', true),…