[Authz] Added section for migration routes created by utility function

[elena-shostak]

Summary

• Added section for migrating routes created by utility function.
• Added patch method to route methods in eslint rule.

Checklist

• Documentation was added for features that require explanation or tutorials

[elasticmachine]

Pinging @elastic/kibana-security (Team:Security)

[kibanamachine]

Starting backport for target branches: 8.x

https://github.com/elastic/kibana/actions/runs/11599079537

[kibanamachine]

💔 All backports failed

Status	Branch	Result
❌	8.x	Backport failed because of merge conflicts You might need to backport the following PRs to 8.x: - [Mappings editor] Handle unsupported types (#198185)

Manual backport

To create the backport manually run:

node scripts/backport --pr 198401

Questions ?

Please refer to the Backport tool documentation

[kibanamachine]

Friendly reminder: Looks like this PR hasn’t been backported yet.
To create automatically backports add a backport:* label or prevent reminders by adding the backport:skip label.
You can also create backports manually by running node scripts/backport --pr 198401 locally

[kibanamachine]

Friendly reminder: Looks like this PR hasn’t been backported yet.
To create automatically backports add a backport:* label or prevent reminders by adding the backport:skip label.
You can also create backports manually by running node scripts/backport --pr 198401 locally