Introducing Metric Alert notification charts and Duplicate Alerts

Introducing Metric Alert notification charts and Duplicate Alerts. Metric Alert Notification Charts provide additional context around potential customer impact by displaying metrics over time in the alert notification itself, making it easier to prioritize which alerts need attention first. The feature is automatically enabled for all Metric Alerts and can be shared with team members via Slack. Duplicate Alerts allow users to quickly copy an existing alert configuration across multiple projects or within the same project, saving time on setting up new alerts. These updates aim to reduce time spent in Sentry and increase productivity.