Bug : unexpected character 'é' (U+00E9)" error occurring in the survey responses tab for the survey

Bug Description

Please describe.
"unexpected character 'é' (U+00E9)" error occurring in the survey responses tab for the survey, when this contains Spanish text with accented characters (e.g. "¿Cómo calificarías...", "calificación", "opinión"), and the responses tab parser appears to fail when encountering non-ASCII characters like é, á, ó, ú.

How to reproduce

1. Create a Survey
2. Add questions in Spanish with non-ASCII characters ( á , é , í , ó, ú)
3. Save Survery
4. Answer the Survey and return to Responses Tab in web
5. Show an error and can't watch responses in the table

Additional context

Debug info

- [ ] PostHog Cloud, Debug information: [please copy/paste from https://us.posthog.com/settings/project-details#variables or https://eu.posthog.com/settings/project-details#variables]
- [ ] PostHog Hobby self-hosted with `docker compose`, version/commit: [please provide]
- [ ] PostHog self-hosted with Kubernetes (deprecated, see [`Sunsetting Kubernetes support`](https://posthog.com/blog/sunsetting-helm-support-posthog)), version/commit: [please provide]

Start at the survey Responses tab and reproduce the failure with Spanish questions and responses containing accented characters such as é, á, í, ó, and ú. Trace where the responses table parses or displays that data; done means the table renders those responses without the unexpected-character error.