$skiptoken results in error for repeat group of individual submission

[matthew-white]

If I specify $skiptoken when fetching instances of a repeat group for an individual submission, I receive a 500 response. For example, on staging:

1. Fetch the first instance of the repeat group r for the individual submission uuid:a43abf3f-d3be-4fab-ab04-56cc03e943d0:
   • GET /v1/projects/83/forms/repeat_int.svc/Submissions('uuid%3Aa43abf3f-d3be-4fab-ab04-56cc03e943d0')/r?%24
     top=1
2. The response will have an @odata.nextLink with a $skiptoken. Send a request to that URL:
   • GET /v1/projects/83/forms/repeat_int.svc/Submissions('uuid%3Aa43abf3f-d3be-4fab-ab04-56cc03e943d0')/r?%24
     top=1&%24skiptoken=...
3. Observe that the request results in a 500 response. When I check the service logs, I see:

TypeError: filtered.fiindIndex is not a function
    at /usr/odk/lib/formats/odata.js:513:25

Central version shown in version.txt

versions:
3a6a1890f3de66537d539bf028db7068250ae5a6 (v2023.5.1-4-g3a6a189)
+2bb17a501416814bbd987ddc953abc5b0c40c58a client (v2023.5.0-43-g2bb17a50)
+b626ba3973d758586901b9f6702200b0a88e0c9f server (v2023.5.0-48-gb626ba39)