chore: suppress DevTools CDP command errors (#627)

This PR suppresses all the CDP command errors that DevTools logs via
`console.error`. (mostly `Storage.getStorageKey` errors). These
`console.error`s could also break MCP client that don't ignore invalid
JSON on stdio.

Author: szuend

src/DevtoolsUtils.ts

@@ -10,6 +10,7 @@ import {
   type IssuesManagerEventTypes,
   MarkdownIssueDescription,
   Marked,
+  ProtocolClient,
   Common,
   I18n,
 } from '../node_modules/chrome-devtools-frontend/mcp/mcp.js';
@@ -125,6 +126,9 @@ export function mapIssueToMessageObject(issue: AggregatedIssue) {
   };
 }
 
+// DevTools CDP errors can get noisy.
+ProtocolClient.InspectorBackend.test.suppressRequestErrors = true;
+
 I18n.DevToolsLocale.DevToolsLocale.instance({
   create: true,
   data: {