[Fleet] Provide search by name in agent policy tab

[Alphayeeeet]

Describe the feature:
In agent policy tab, there should be a search by the agent policy name. As i could not find it as it only provides me json fields of the policy value like id, i assume it is currently not possible. I am using kibana 8.13.2 for reference.
Describe a specific use case for the feature:
Better user experience by allowing to quicksearch by policy name in the UI.

[elasticmachine]

Pinging @elastic/fleet (Team:Fleet)

[jillguyonnet]

It is possible to search agent policies by name, but we're currently working on a bug fix affecting versions 8.11.2 and higher: #178069.
Note that the name field has keyword type, so to do a partial search you would need to use valid KQL syntax with wildcards. Quick free text search (not KQL) by name is currently not possible (unless the exact full string is entered, but that's not very useful).