(adapter-netlify) Query params containing commas split after first comma

[adamjkb]

Describe the bug
A query parameter is split after the first comma if it contains a comma. For example if the query parameter is A string, with a comma / ?comma=A string%2C containing comma. The page will only receive A string as its query params.

To Reproduce
Repo: https://github.com/adamjkb/sveltekit-query-parsing
Deployed Netlify example: https://sveltekit-query-parsing.netlify.app/?comma=A%20string%2C%20containing%20comma&simple=Simple%20string

Expected behavior
To receive full query parameters

Additional context
The issue is caused by the following line in the adapter

const query = new URLSearchParams();
for (const k in queryStringParameters) { // queryStringParameters = {"q": "A string, with comma"}
  const value = queryStringParameters[k];
  value.split(', ').forEach((v) => {
	  query.append(k, v);
  });
}