[maps] display search request warnings in legend

[nreese]

Steps to view problem

1. In console, run:

   PUT geo1
   {}
   
   PUT geo1/_mapping
   {
     "properties": {
       "location": {
         "type": "geo_point"
       }
     }
   }
   
   PUT geo1/_doc/1
   {
     "location": "25,25"
   }
   
   PUT geo2
   {}
   
   PUT geo2/_mapping
   {
     "properties": {
       "location": {
         "type": "geo_point"
       }
     }
   }
   
   PUT geo2/_doc/1
   {
     "location": "35,35"
   }
   

2. Create geo* data view
3. create new map, add documents layer from geo* data view.
4. Set scaling to limit to 10,000
5. add filter

   {
     "error_query": {
       "indices": [
         {
           "error_type": "exception",
           "message": "local shard failure message 123",
           "name": "geo2"
         }
       ]
     }
   }
   

6. Notice how warning is displayed as toast message. Instead, warning should be displayed in legend. Layer icon should be warning icon and legend details should show warning callout with "View details link"
   

[elasticmachine]

Pinging @elastic/kibana-presentation (Team:Presentation)