Honor requireConfig in untrusted workspaces

When requireConfig is true and the workspace is untrusted, return
"disabled" instead of null so formatting is correctly skipped rather
than proceeding with VS Code defaults.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: ntotten

src/ModuleResolverNode.ts

@@ -409,6 +409,9 @@ export class ModuleResolver implements ModuleResolverInterface {
     // code execution.
     if (!workspace.isTrusted) {
       this.loggingService.logDebug(UNTRUSTED_WORKSPACE_SKIPPING_CONFIG);
+      if (vscodeConfig.requireConfig) {
+        return "disabled";
+      }
       return null;
     }