[SIEM] [Case] Remaining Case View issues

[stephmilovic]

Blocked by #58525

• after post comment, make sure new comment shows up under old ones [SIEM] [Cases] Delete, comment, and reducer updates #59616
• add the "user action saved object" actions to the UserActionTree titles (ex: Updated by X at 12pm)
• add Participants to Case View
• connect mailto actions [SIEM] [Cases] Case closed and add user email #60463
• display closed at time when case is closed [SIEM] [Cases] Case closed and add user email #60463
• make the user avatar the currentUser for update mode on description/comments and also on new comments [SIEM] [Case] Bulk status update, add comment avatar, id => title in breadcrumbs #60410
• change the breadcrumbs to display Case Title instead of Case Id [SIEM] [Case] Bulk status update, add comment avatar, id => title in breadcrumbs #60410

These are not blocked:

• UI for delete case [SIEM] [Cases] Delete, comment, and reducer updates #59616
• UI for delete comment out of scope

[elasticmachine]

Pinging @elastic/siem (Team:SIEM)