Bug: New query to base dashboard to avoid duplicates. Update label.

[GShepherdTC]

Proposed commit message

Updated the base query to include the latest index so indicators are not counted twice for all the
panels in the dashboard. Updated 1 label to show its unique indicators being counted.

Checklist

• [X ] I have reviewed tips for building integrations and this pull request is aligned with them.
• I have verified that all data streams collect metrics or logs.
• I have added an entry to my package's changelog.yml file.
• I have verified that Kibana version constraints are current according to guidelines.
• I have verified that any added dashboard complies with Kibana's Dashboard good practices

Author's Checklist

• existing dashboard updates

How to test this PR locally

Run the integration and view the dashboard is reflecting correct counts now.

Related issues

Screenshots