Kibana Saved Objects: Instant search on analyzed object names

[dschneiter]

Describe the feature:
Currently, when searching for objects a user needs to hit enter to trigger the search. The feature would update the list of matching objects along with the typed in characters

Describe a specific use case for the feature:

• First, for consistency: it would be beneficial to align the search behavior for objects across all areas in Kibana (bringing it up to par with the search feature in the Visualize or Dashboard section)
• Second, to make it easier to export a complete group of objects. For instance, it is currently not possible to query for all objects related to the ecommerce sample data. Wile searching for ecommerce is matching all the visualizations and dashboards, it won't match the required index pattern kibana_sample_data_ecommerce (a tokenizer that splits on _ might be beneficial)

[rudolf]

Related #14729