Display active alerts in experiment detail and results pages

[data-sync-user]

Add visual indicators for active alerts in the Experimenter UI. Show alert badges with emoji status indicators on experiment detail and results pages.

Technical Approach:

• Modify Django views to include alerts in context
• Update templates to display alert badges
• Add CSS styling for alerts
• Show only recent alerts (last 10)
• Group alerts by type

┆Issue is synchronized with this Jira Task