[O11y][MongoDB] Add custom number formatting to visualizations

[rajvi-patel-22]

Description

Workaround implemented during lens migration

Used default format and migrated visualization to lens.

Task

Revisit panels and add custom number formatting (2000->2k) to visualizations.
[Reference]

Related Issues

• [Lens] Add more number format options kibana#72711
• [O11y][MongoDB] Lens Migration #5541

[botelastic]

Hi! We just realized that we haven't looked into this issue in a while. We're sorry! We're labeling this issue as Stale to make it hit our filters and make sure we get back to it as soon as possible. In the meantime, it'd be extremely helpful if you could take a look at it as well and confirm its relevance. A simple comment with a nice emoji will be enough :+1. Thank you for your contribution!