Move active incident to redux for live checklist chart update

Description

Move the backstage active incident to redux to bind the incident details screen to update the data automatically, specifically the checklist timeline chart.

QA Test Steps

None

Mana

None

Assignee

Unassigned

QA Assignee

None

Reporter

Maria Nuñez

Epic Link

None

Fix versions

Mattermost Team

Workflows

Sprint

None

QA Testing Areas

None

GitHub Issue

None

Components

Configure