[7.x] [Lens] Avoid unnecessary data fetching on dimension flyout open (#82957)

[dej611]

Backports the following commits to 7.x:

• [Lens] Avoid unnecessary data fetching on dimension flyout open ([Lens] Avoid unnecessary data fetching on dimension flyout open #82957)

[kibanamachine]

💚 Build Succeeded

• continuous-integration/kibana-ci/pull-request
• Commit: bc7e5eb

Metrics [docs]

Module Count

Fewer modules leads to a faster build time

id	before	after	diff
lens	435	436	+1

Async chunks

Total size of all lazy-loaded chunks that will be downloaded as the user navigates the app

id	before	after	diff
lens	927.3KB	927.7KB	+468.0B

To update your PR or re-run it, just comment with:
@elasticmachine merge upstream