Provide a default sequence ontology location

Author: garrettjstevens

packages/jbrowse-plugin-apollo/local.config.json

@@ -45,18 +45,5 @@
       "name": "Apollo",
       "url": "http://localhost:9000/dist/jbrowse-plugin-apollo.umd.development.js"
     }
-  ],
-  "configuration": {
-    "ApolloPlugin": {
-      "ontologies": [
-        {
-          "name": "Sequence Ontology",
-          "source": {
-            "uri": "http://localhost:9000/test_data/so-v3.1.json",
-            "locationType": "UriLocation"
-          }
-        }
-      ]
-    }
-  }
+  ]
 }

packages/jbrowse-plugin-apollo/src/session/ClientDataStore.ts

@@ -42,6 +42,7 @@ import {
 import { ChangeManager } from '../ChangeManager'
 import {
   OntologyManagerType,
+  OntologyRecordConfiguration,
   type TextIndexFieldDefinition,
 } from '../OntologyManager'
 import type ApolloPluginConfigurationSchema from '../config'
@@ -173,6 +174,18 @@ export function clientDataStoreFactory(
             const { ontologyManager, pluginConfiguration } = self
             const configuredOntologies =
               pluginConfiguration.ontologies as AnyConfigurationModel[]
+            if (configuredOntologies.length === 0) {
+              configuredOntologies.push(
+                OntologyRecordConfiguration.create({
+                  name: 'Sequence Ontology',
+                  version: '01c33c6d9b6c8dca12e7d3e37b49ee113093c2fa',
+                  source: {
+                    uri: 'https://raw.githubusercontent.com/The-Sequence-Ontology/SO-Ontologies/01c33c6d9b6c8dca12e7d3e37b49ee113093c2fa/Ontology_Files/so.json',
+                    locationType: 'UriLocation',
+                  },
+                }),
+              )
+            }
             for (const ont of configuredOntologies || []) {
               const [name, version, source, indexFields] = [
                 readConfObject(ont, 'name') as string,