Change online UI schema field to be optional (#2766)

Change the `online` field in feastFeatureViews schema to be optional.
This addresses a problem with the UI erroring out when trying to present
offline FeatureViews since protobuf would not pass along the `online`
tag (#2719).

Signed-off-by: Dirk Van Bruggen <[email protected]>

Author: dvanbrug

ui/src/parsers/feastFeatureViews.ts

@@ -39,7 +39,7 @@ const FeastFeatureViewSchema = z.object({
     features: z.array(FeastFeatureColumnSchema),
     ttl: z.string().transform((val) => parseInt(val)),
     batchSource: FeastBatchSourceSchema,
-    online: z.boolean(),
+    online: z.boolean().optional(),
     owner: z.string().optional(),
     tags: z.record(z.string()).optional(),
   }),