Grafana search option does not work with Influx Cloud Serverless

__Steps to reproduce:__

1. Create a database/bucket in InfluxDB Cloud Serverless Storage Engine Version 3
2. add Influx to Grafana as a datasource (I tested with Grafana Cloud (Free), Grafana v10.2.4)
3. Create a new dashboard and try to use the search option.

__Expected behaviour:__
Grafana proposes tagnames that start with the substring that was inserted in the search field.

__Actual behaviour:__
When selecting "a measurement" in grafana, all the options are shown, so It is able to get all the measurements in the database.
However, when searching for a substring of a measurement, the result is empty:
I tried the same influx Data source in 2 different grafana versions, same results in both. I added other Influx (V2) datasources to grafana. With these influx versions, the search option works.

__Environment info:__
it's an influx cloud, not sure what I should give as info here

__Config:__
no config changes

__Logs:__

__ExtraInfo:__
I started here:
https://community.influxdata.com/t/grafana-search-option-does-not-work-with-influx-cloud-serverless/56149

No repository file, test, or entry point is identified. Start by reproducing the measurement search with InfluxDB Cloud Serverless through Grafana, then trace the relevant query path; done means substring searches return the matching measurement or tag names as expected.

Written by the indexing model from the issue text.