Allow Processing Continuation with 'Not Found' Status Instead of Throwing NotCapable

[kuboon]

Deno's fine-grained permissions are fantastic.
However, many existing packages (especially npm packages) require read access to many environment variables and files that are not practically necessary for their operation. This forces us to use --allow-read (all) or -A, which essentially ruins Deno's permission model.

I feel that the situation would be much improved if there were an option to simply continue processing with a "not found" status instead of throwing NotCapable when read or env permissions are denied.

In the context of the rapidly increasing use of the stdio MCP server, Deno can prohibit unauthorized access by properly restricting permissions. Wouldn't this be a significant selling point?

[bartlomieju]

#31168