[7.x] [Lens] Create mathColumn function to improve performance (#101908)

[kibanamachine]

Backports the following commits to 7.x:

• [Lens] Create mathColumn function to improve performance ([Lens] Create mathColumn function to improve performance #101908)

[kibanamachine]

💚 Build Succeeded

• continuous-integration/kibana-ci/pull-request
• Commit: 7baab61
• Storybooks Preview
• Documentation Changes

Metrics [docs]

Module Count

Fewer modules leads to a faster build time

id	before	after	diff
expressions	157	159	+2

Public APIs missing comments

Total count of every public API that lacks a comment. Target amount is 0. Run node scripts/build_api_docs --plugin [yourplugin] --stats comments for more detailed information.

id	before	after	diff
expressions	1508	1534	+26

Any counts in public APIs

Total count of every any typed public API. Target amount is 0. Run node scripts/build_api_docs --plugin [yourplugin] --stats any for more detailed information.

id	before	after	diff
expressions	57	58	+1

Async chunks

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

id	before	after	diff
canvas	1.3MB	1.3MB	+719.0B
lens	1.5MB	1.5MB	-59.0B
total			+660.0B

Page load bundle

Size of the bundles that are downloaded on every page load. Target size is below 100kb

id	before	after	diff
expressions	206.0KB	209.1KB	+3.1KB

Unknown metric groups

API count

id	before	after	diff
expressions	1936	1962	+26

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

cc @wylieconlon