Add linter fixes for new AI samples (#1484)

eslint.config.js

@@ -65,6 +65,7 @@ module.exports = [
       '_archive/**/*',
       '**/third-party/**',
       '**/node_modules/**/*',
+      '**/dist/**/*',
       // These are autogenerated files that we shouldn't lint
       'functional-samples/cookbook.wasm-helloworld-print/wasm/pkg/**/*',
       'functional-samples/cookbook.wasm-helloworld-print-nomodule/wasm/pkg/**/*'

functional-samples/ai.gemini-on-device-alt-texter/background.js

@@ -26,7 +26,7 @@ async function generateAltText(imgSrc) {
   return await session.prompt(prompt);
 }
 
-chrome.contextMenus.onClicked.addListener(async (info, tab) => {
+chrome.contextMenus.onClicked.addListener(async (info, _tab) => {
   if (info.menuItemId === 'generateAltText' && info.srcUrl) {
     // Start opening the popup
     const [result] = await Promise.allSettled([

functional-samples/ai.gemini-on-device-audio-scribe/demo-chat-app/script.js

@@ -10,7 +10,6 @@ document.addEventListener('DOMContentLoaded', () => {
 
   async function renderMessages() {
     messageList.innerHTML = ''; // Clear existing messages
-    let delay = 0; // Initial delay
     const delayIncrement = 3000; // 5 seconds in milliseconds
 
     await timeout(3000);

functional-samples/ai.gemini-on-device-audio-scribe/sidepanel.js

@@ -67,11 +67,10 @@ chrome.runtime.onMessage.addListener(async ({ data }) => {
 });
 
 function isValidUrl(string) {
-  let url;
-
   try {
-    url = new URL(string);
+    new URL(string);
     return true;
+    // eslint-disable-next-line no-unused-vars
   } catch (_) {
     return false;
   }