csv data select is double escaped

# Bug report <!-- ⚠️ We receive a lot of bug reports which have already been solved or discussed. If you are looking for help, please try these first: - Docs: https://docs.supabase.com - Discussions: https://github.com/supabase/supabase/discussions - Discord: https://discord.supabase.com Before opening a bug report, please verify the following: --> - [x] I confirm this is a bug with Supabase, not with my own application. - [x] I confirm I have searched the [Docs](https://docs.supabase.com), GitHub [Discussions](https://github.com/supabase/supabase/discussions), and [Discord](https://discord.supabase.com). ## Describe the bug When using supabase to return csv data via a select ```python response = await client.table("mytable").eq("id", 123).csv().execute() ``` The resulting data is corrupt, seems to be double escaped for jsonb values: ```text "{""nel"": ""{\\""success_fraction\\"":0,\\""report_to\\"":\\""cf-nel\\"",\\""max_age\\"":604800}""}" ``` If I download the same row from the dashboard I get valid data: ```text "{""nel"":""{\""success_fraction\"":0,\""report_to\"":\""cf-nel\"",\""max_age\"":604800}""}" ``` ## To Reproduce You need a table with a jsonb column which has value which contains escaped value e.g. ```text {"nel": "{\"success_fraction\":0,\"report_to\":\"cf-nel\",\"max_age\":604800}"} ``` ```python from pathlib import Path import supabase client = supabase.AsyncClient(supabase_url, supabase_key) response = await client.table("mytable").select("headers").eq("id", 123).csv().execute() reader: csv.DictReader[str] = csv.DictReader(io.StringIO(response.data)) for row in reader: json.loads(row["headers"]) ``` ## Expected behavior the `json.loads` should not throw an exception, instead it does: ```text json.decoder.JSONDecodeError: Expecting ',' delimiter: line 1 column 14 (char 13) ``` ## Screenshots If applicable, add screenshots to help explain your problem. ## System information - OS: macOS - Browser (if applies) [e.g. chrome, safari] - Version of…