[Bug]: single quotes being escaped in env variables

[akash-codemonk]

@sharat87 Sending a value with quotes to the api(v1/admin/env) is resulting in quotes getting escaped. Added some points below which describes the issue.

settings.mov

If I send the value as 'none' from the client it stores it as none without the quotes in the env file. Checking on the browser also shows none without quotes. I believe it should be APPSMITH_ALLOWED_FRAME_ANCESTORS="'none'" instead.

2. Same case with sending 'self'

3. Additionally if I send the value as 'self' release.app.appsmith.com the env file stores it as

In this case it does get applied properly though when I check the same in the browser

4. This seems the case with all the fields but in case of APPSMITH_ALLOWED_FRAME_ANCESTORS we probably have to preserve/not escape the quotes.

If you want the frontend to debug it is at #16629

Originally posted by @akash-codemonk in #16597 (comment)