Add query param to check if Blazor WASM app is under debug (#24972)

Author: captainsafia

src/Components/Web.JS/dist/Release/blazor.webassembly.js

@@ -3,10 +3,17 @@ import { WebAssemblyResourceLoader } from '../WebAssemblyResourceLoader';
 const currentBrowserIsChrome = (window as any).chrome
   && navigator.userAgent.indexOf('Edge') < 0; // Edge pretends to be Chrome
 
+let isDebugging = true;
+
+window.addEventListener('load', () => {
+  const params = new URLSearchParams(window.location.search);
+  isDebugging = params.get('_blazor_debug') === 'true';
+})
+
 let hasReferencedPdbs = false;
 
 export function hasDebuggingEnabled() {
-  return hasReferencedPdbs && currentBrowserIsChrome;
+  return isDebugging && hasReferencedPdbs && currentBrowserIsChrome;
 }
 
 export function attachDebuggerHotkey(resourceLoader: WebAssemblyResourceLoader) {
@@ -26,6 +33,8 @@ export function attachDebuggerHotkey(resourceLoader: WebAssemblyResourceLoader)
         console.error('Cannot start debugging, because the application was not compiled with debugging enabled.');
       } else if (!currentBrowserIsChrome) {
         console.error('Currently, only Microsoft Edge (80+), or Google Chrome, are supported for debugging.');
+      } else if (!isDebugging) {
+        console.error(`_blazor_debug query parameter must be set to enable debugging. To enable debugging, go to ${location.href}?_blazor_debug=true.`);
       } else {
         launchDebugger();
       }