fix(lint): resolve ESLint errors and deprecation warnings

- Remove unused __dirname import from eslint.config.mjs
- Add missing globals (exports, setTimeout, setInterval, etc.) to config
- Migrate .eslintignore patterns to eslint.config.mjs ignores array
- Remove unused 'showSignUpButton' prop from Navigation component
- Remove unused 'height' and 'width' props from Toggle component

This resolves all ESLint check failures in the CI pipeline.

Signed-off-by: MANISH KUMAR <146671113+manishpatel00@users.noreply.github.com>

Author: manishpatel00

site/eslint.config.mjs

@@ -1,11 +1,6 @@
 import js from "@eslint/js";
 import reactPlugin from "eslint-plugin-react";
 import babelParser from "@babel/eslint-parser";
-import { fileURLToPath } from "url";
-import { dirname } from "path";
-
-const __filename = fileURLToPath(import.meta.url);
-const __dirname = dirname(__filename);
 
 export default [
   js.configs.recommended,
@@ -19,6 +14,17 @@ export default [
       ".github/**",
       "assets/**",
       "public/**",
+      ".babelrc",
+      ".env.development",
+      "CNAME",
+      "CODE_OF_CONDUCT.md",
+      "CODEOWNERS",
+      "font-preload-cache.json",
+      "LICENSE",
+      "Makefile",
+      "README.md",
+      "package.json",
+      "package-lock.json",
     ],
     plugins: {
       react: reactPlugin,
@@ -44,9 +50,14 @@ export default [
         process: "readonly",
         module: "writable",
         require: "readonly",
+        exports: "writable",
         __dirname: "readonly",
         __filename: "readonly",
         define: "readonly",
+        setTimeout: "readonly",
+        setInterval: "readonly",
+        clearTimeout: "readonly",
+        clearInterval: "readonly",
       },
     },
     settings: {

site/src/components/Navigation/index.js

@@ -9,7 +9,7 @@ import CloudIcon from "./CloudIcon";
 import KanvasIcon from "./KanvasIcon";
 import LogoutIcon from "./LogoutIcon";
 
-function Navigation({ theme, toggleTheme, showSignUpButton }) {
+function Navigation({ theme, toggleTheme }) {
   const [userData, setUserData] = useState(null);
   const [openNav, setOpenNav] = useState(false);
   const Logo = theme === "light" ? mesheryLogo : mesheryLogoLight;

site/src/components/Toggle.js

@@ -5,7 +5,7 @@ const toggleStyle = {
   cursor: "pointer",
 };
 
-export const Toggle = ({ theme, toggleTheme, height, width }) => {
+export const Toggle = ({ theme, toggleTheme }) => {
   return (
     <div className="themeToggle" onClick={toggleTheme} style={toggleStyle}>
       {theme === "dark" ? (