feat(denols): disable import completion from some registries in default

[kyoh86]

Language server

denols

Requested feature

same as the vscode extension:
https://github.com/denoland/vscode_deno/blob/3d20875396a779fc7047ac826c97775571d997e5/package.json#L430-L440

           "default": {
-            "https://deno.land": true,
-            "https://x.nest.land": true,
-            "https://crux.land": true
+            "https://deno.land": true
           },

This option has set in #2793 to according to the vscode extension.

Other clients which have this feature

No response