Add migrated field instance settings

drupal10/config/field.field.node.event.field_sessions.yml

@@ -0,0 +1,30 @@
+uuid: 5c7ad5d8-c2d0-40af-b9f6-1e9002d28878
+langcode: en
+status: true
+dependencies:
+  config:
+    - field.storage.node.field_sessions
+    - node.type.event
+    - node.type.session
+id: node.event.field_sessions
+field_name: field_sessions
+entity_type: node
+bundle: event
+label: Sessions
+description: ''
+required: false
+translatable: false
+default_value: {  }
+default_value_callback: ''
+settings:
+  handler: 'default:node'
+  handler_settings:
+    target_bundles:
+      session: session
+    sort:
+      field: title
+      direction: ASC
+    behaviors:
+      views-select-list:
+        status: 0
+field_type: entity_reference