fix: save token to correct provider ID based on deployment type

Determine provider ID from auth data's enterpriseUrl field instead
of using the provider.id parameter, which may not reflect the actual
deployment type. This ensures tokens are saved to the correct provider
(github-copilot or github-copilot-enterprise).

Author: OlaHulleberg

index.mjs

@@ -70,9 +70,12 @@ export async function CopilotAuthPlugin({ client }) {
 
               const tokenData = await response.json();
 
+              const saveProviderID = info.enterpriseUrl
+                ? "github-copilot-enterprise"
+                : "github-copilot";
               await client.auth.set({
                 path: {
-                  id: provider.id,
+                  id: saveProviderID,
                 },
                 body: {
                   type: "oauth",