Map type broken for Ad-Hoc filters

There have been multiple reports of the Map type being broken for Ad-Hoc filters for OTel data. Trouble with the filters being applied as well as errors in showing the filter values as seen below:

<img width="1092" height="640" alt="object showing in ad hoc filter suggestions" src="https://github.com/user-attachments/assets/1801d4df-7dfd-48cd-92cd-dd15d1911a1f" />
