[7.x] Update alert type selection layout to rows instead of grid (#73665)

[YulNaumenko]

Backports the following commits to 7.x:

• Update alert type selection layout to rows instead of grid (Update alert type selection layout to rows instead of grid #73665)

[kibanamachine]

💚 Build Succeeded

• continuous-integration/kibana-ci/pull-request
• Commit: c83a025

Metrics [docs]

Module Count

Fewer modules leads to a faster build time

id	before	after	diff
triggersActionsUi	285	295	+10

Async chunks

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

id	before	after	diff
triggersActionsUi	1.5MB	1.5MB	+12.8KB

Distributable file count

id	before	after	diff
default	43117	43118	+1

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@elasticmachine merge upstream