[IM] prevent users from editing and deleting cloud-managed templates

[alisonelizabeth]

This PR prevents cloud-managed templates from being edited or deleted via the UI.

I followed a similar implementation done via #40104.

Testing instructions

1. Add cluster.metadata.managed_index_templates setting via Dev Tools:

PUT /_cluster/settings
{
  "persistent": {
    "cluster.metadata.managed_index_templates": ".cloud-"
  }
}

2. Create a template with the format: .cloud-<template_name> via Dev Tools.

PUT _template/.cloud-example
{
  "index_patterns": [ "foobar*"]
}

Note: both of these steps are for testing purposes only.

Screenshots

Edit/clone disabled via table

Edit/clone disabled via details panel

Error displays if you attempt to access the url directly to edit a cloud-managed template

[elasticmachine]

Pinging @elastic/es-ui

[alisonelizabeth]

FYI @zanbel @nachogiljaldo

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[nachogiljaldo]

The PR looks good running against Cloud.

I personally would have loved if it supported multiple wildcards/prefixes so it's more future proof, but this one works indeed.

[jen-huang]

Code LGTM! Didn't test locally.

Some non-blocker suggestions but heavily encouraged 😄:

• I would love to see tooltips on the table action items that explain why they are disabled, but I know that is a limitation of using EUI's default action items props, which don't support tooltips when an action is disabled. It may be possible by rendering custom actions instead, though that may be tricky too since there are more than 2 actions here. I ran into a similar issue for SLM and ended up rendering one custom action that shows three button icons (screenshot).

• If we don't render custom actions, then I think it would be great to add a warning callout to the detail panel of a managed template so that an explanation is given somewhere. As it currently stands, the only explanation is on the edit page which is largely inaccessible since Edit is disabled. I also wouldn't be opposed to rendering this callout regardless of if we are able to add tooltips! 🙂Example screenshot from managed repository, note that the repository also gets a Managed badge in the table. PR for handling managed repository: [SR] Add callout for managed repository and prevent deletion from UI #36947

[cjcenizal]

Great suggestion @jen-huang! I added a callout using the primary color (warning seemed inappropriate since the UI already prevents the user from doing any harm).

[cjcenizal]

LGTM!

[cjcenizal]

Where does this message get surfaced?

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