Adding v0 and dashboard refresh info to TA (#15058)

## DESCRIBE YOUR PR
Test Analytics UX has some updates that would be useful for people to
know about.

## IS YOUR CHANGE URGENT?  

Help us prioritize incoming PRs by letting us know when the change needs
to go live.
- [x] Urgent deadline (GA date, etc.): Ideally today
- [ ] Other deadline: <!-- ENTER DATE HERE -->
- [ ] None: Not urgent, can wait up to 1 week+

## SLA

- Teamwork makes the dream work, so please add a reviewer to your PRs.
- Please give the docs team up to 1 week to review your PR unless you've
added an urgent due date to it.
Thanks in advance for your help!

## PRE-MERGE CHECKLIST

*Make sure you've checked the following before merging your changes:*

- [ ] Checked Vercel preview for correctness, including links
- [ ] PR was reviewed and approved by any necessary SMEs (subject matter
experts)
- [ ] PR was reviewed and approved by a member of the [Sentry docs
team](https://github.com/orgs/getsentry/teams/docs)

Co-authored-by: Shannon Anahata <[email protected]>

Author: sfanahata

docs/product/test-analytics/index.mdx

@@ -37,7 +37,7 @@ If you are already using GitHub Actions, you can use the `getsentry/prevent-acti
 ```yaml
 - name: Upload test results to Sentry
   if: ${{ !cancelled() }}
-  uses: getsentry/prevent-action
+  uses: getsentry/prevent-action@v0
   with:
     token: ${{ secrets.SENTRY_PREVENT_TOKEN }}
 ```
@@ -91,7 +91,7 @@ After your workflow runs, view failed tests in the [failed tests dashboard](http
 
 ![Test Analytics comment](./img/TA-comment.png)
 
-You can see a complete overview of your test analytics in the [test analytics dashboard](https://sentry.io/prevent/tests/).
+You can see a complete overview of your test analytics in the [test analytics dashboard](https://sentry.io/prevent/tests/). **Note**: The `All Branches`dashboard refreshes every 24 hours. 
 
 ##  Permissions and Repository Tokens
 When configuring Test Analytics, you'll be asked to choose your upload permissions. For GitHub Actions, you can use [OpenID Connect](https://docs.github.com/en/actions/security-for-github-actions/security-hardening-your-deployments/about-security-hardening-with-openid-connect), or generate a repository token. Using the CLI, generate a repository token.