fix: do not cache unsupported origins in config (#571)

Ref denoland/deno#12621

client/src/notification_handlers.ts

@@ -8,25 +8,25 @@ export function createRegistryStateHandler(): NotificationHandler<
   RegistryStateParams
 > {
   return async function handler({ origin, suggestions }) {
-    let enable = false;
     if (suggestions) {
       const selection = await vscode.window.showInformationMessage(
         `The server "${origin}" supports completion suggestions for imports. Do you wish to enable this? (Only do this if you trust "${origin}") [Learn More](https://github.com/denoland/vscode_deno/blob/main/docs/ImportCompletions.md)`,
         "No",
         "Enable",
       );
-      enable = selection === "Enable";
+      const enable = selection === "Enable";
+      const suggestImportsConfig = vscode.workspace.getConfiguration(
+        "deno.suggest.imports",
+      );
+      const hosts: Record<string, boolean> =
+        suggestImportsConfig.get("hosts") ??
+          {};
+      hosts[origin] = enable;
+      await suggestImportsConfig.update(
+        "hosts",
+        hosts,
+        vscode.ConfigurationTarget.Workspace,
+      );
     }
-    const suggestImportsConfig = vscode.workspace.getConfiguration(
-      "deno.suggest.imports",
-    );
-    const hosts: Record<string, boolean> = suggestImportsConfig.get("hosts") ??
-      {};
-    hosts[origin] = enable;
-    await suggestImportsConfig.update(
-      "hosts",
-      hosts,
-      vscode.ConfigurationTarget.Workspace,
-    );
   };
 }