Add Filter Button for Disconnected Services in the Applications View

[apriofrost]

Description

Allow users to find and remediate disconnected nodes by adding filter buttons for disconnected nodes for both the service group table and the service detail list.

Definition of Done

• When there are no disconnected services, no new filters are shown
• When disconnected services are present, a filter button for disconnected services is shown above the service groups table
• when the filter is activated, only service groups that have one or more disconnected services are shown in the service groups table
• when a service group with 1 or more disconnected services is selected, the service detail panel shows a filter button for disconnected services
• when the disconnected services filter for the service detail panel is activated, only disconnected services are shown in the services detail list.
• pagination in the service detail panel works as expected if there are more than 25 disconnected services in a service group

Backend

Done, see PR

• API for service groups can filter for disconnected
• API for health counts includes the count of disconnected
• API for services by service group can filter for disconnected
• API for health counts for services in a service group can filter for disconnected

UI (tbd)

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