[Security Solution][Endpoint] User cannot paginate through policies in exceptions flyout

[dasansol92]

Describe the bug:

There is no page size for package policies (using endpoint) in event filters, trusted apps, blocklists or host isolation exceptions flyout. If there are more policies than the default page size (20) user cannot select anything above 20.

Would be good adding some sort of pagination and dispatch a new query when using the provided search bar.

Steps to reproduce:

1. Add more than 20 policies with defend integration in it
2. Open create event filter flyout from event filters list (or other endpoint exception type like Trusted apps)
3. On the assignment section, select Per policy.
4. Note that you can only select the first 20 policies in the list and there is no option to select others.

Expected behavior:
User can select any policy with defend integration

Screenshots (if relevant):

## AC

• Set de page size to 1k package policies.
• As a follow up, we can dispatch api search when typing on the search input, so if there are more than 1k policies on the system, user can search through those using the search input, even if there are more than 1k.

[elasticmachine]

Pinging @elastic/security-defend-workflows (Team:Defend Workflows)

[dasansol92]

PR: #172563