Ogi

- closes: #71230 Adds a `showLegend` prop that is used to toggle Echarts legend in metrics chart Before:  After: 

Set of tasks required for rollout. Based on https://www.notion.so/sentry/Rollout-eda0c60afb464a87b9cd0be80dd1f23f ```[tasklist] - [ ] https://github.com/getsentry/sentry/issues/71220 - [ ] https://github.com/getsentry/sentry/issues/71221 - [ ] https://github.com/getsentry/sentry/issues/71222 - [ ] https://github.com/getsentry/sentry/issues/70152 - [ ] https://github.com/getsentry/sentry/issues/68864...

chore(metrics): remove first custom metric sent message

1

Follow up of #71096

feat(metrics): awaiting ingestion mode

2

- closes #75121 https://github.com/user-attachments/assets/61a88748-9b8a-4e26-9666-09011e99f22c

- Part of: #77547 - Displays info alert for orgs whose alerts or widgets have been removed.

feature(sourcemaps): remove old sourcemap views

1

- Closes: https://github.com/getsentry/sentry/issues/78318