Attribute indexing missing "sentry." prefix

### Environment SaaS (https://sentry.io/) ### Steps to Reproduce Traces view linking from attribute to query (ex: idle_span_finish_reason) does not function properly. Furthermore, group by dropdown is missing these attributes. <img width="323" height="334" alt="Image" src="https://github.com/user-attachments/assets/88b67018-7b09-4095-89bc-fe86cb4e77d0" /> <img width="430" height="139" alt="Image" src="https://github.com/user-attachments/assets/819e8206-7b7b-4635-b881-132479ee87be" /> ### Expected Result When clicking on linking such as 'Find more samples with this value' it leads to a valid query. Group by should also have these attributes available. ### Actual Result Invalid query/ results. Missing attributes in group by dropdown. ### Product Area Unknown ### Link _No response_ ### DSN _No response_ ### Version _No response_