# What this PR does
Limit length of text in block being posted to slack when showing alert
group timeline.
## Which issue(s) this PR closes
Related to [issue link here]
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## Checklist
- [x] Unit, integration, and e2e (if applicable) tests updated
- [x] Documentation added (or `pr:no public docs` PR label added if not
required)
- [x] Added the relevant release notes label (see labels prefixed w/
`release:`). These labels dictate how your PR will
show up in the autogenerated release notes.
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