fix(theme): remove deprecated @babel/polyfill

Remove @babel/polyfill which is deprecated and redundant; polyfilling
  is already handled by @babel/preset-env with useBuiltIns and core-js 3

Author: johanib

theme/package.json

@@ -38,7 +38,6 @@
   "author": "",
   "devDependencies": {
     "@babel/core": "^7.22",
-    "@babel/polyfill": "^7.12",
     "@babel/preset-env": "^7.22",
     "@eslint/js": "^10.0.1",
     "autoprefixer": "^10.4",

theme/yarn.lock

@@ -669,14 +669,6 @@
     "@babel/helper-create-regexp-features-plugin" "^7.28.5"
     "@babel/helper-plugin-utils" "^7.28.6"
 
-"@babel/polyfill@^7.12":
-  version "7.12.1"
-  resolved "https://registry.yarnpkg.com/@babel/polyfill/-/polyfill-7.12.1.tgz#1f2d6371d1261bbd961f3c5d5909150e12d0bd96"
-  integrity sha512-X0pi0V6gxLi6lFZpGmeNa4zxtwEmCs42isWLNjZZDE0Y8yVfgu0T2OAHlzBbdYlqbW/YXVvoBHpATEM+goCj8g==
-  dependencies:
-    core-js "^2.6.5"
-    regenerator-runtime "^0.13.4"
-
 "@babel/preset-env@^7.22":
   version "7.29.2"
   resolved "https://registry.yarnpkg.com/@babel/preset-env/-/preset-env-7.29.2.tgz#5a173f22c7d8df362af1c9fe31facd320de4a86c"
@@ -1755,11 +1747,6 @@ core-js-compat@^3.48.0:
   dependencies:
     browserslist "^4.28.1"
 
-core-js@^2.6.5:
-  version "2.6.12"
-  resolved "https://registry.yarnpkg.com/core-js/-/core-js-2.6.12.tgz#d9333dfa7b065e347cc5682219d6f690859cc2ec"
-  integrity sha512-Kb2wC0fvsWfQrgk8HU5lW6U/Lcs8+9aaYcy4ZFc6DDlo4nZ7n70dEgE5rtR0oG6ufKDUnrwfWL1mXR5ljDatrQ==
-
 core-js@^3.32:
   version "3.49.0"
   resolved "https://registry.yarnpkg.com/core-js/-/core-js-3.49.0.tgz#8b4d520ac034311fa21aa616f017ada0e0dbbddd"
@@ -3801,11 +3788,6 @@ regenerate@^1.4.2:
   resolved "https://registry.yarnpkg.com/regenerate/-/regenerate-1.4.2.tgz#b9346d8827e8f5a32f7ba29637d398b69014848a"
   integrity sha512-zrceR/XhGYU/d/opr2EKO7aRHUeiBI8qjtfHqADTwZd6Szfy16la6kqD0MIUs5z5hx6AaKa+PixpPrR289+I0A==
 
-regenerator-runtime@^0.13.4:
-  version "0.13.11"
-  resolved "https://registry.yarnpkg.com/regenerator-runtime/-/regenerator-runtime-0.13.11.tgz#f6dca3e7ceec20590d07ada785636a90cdca17f9"
-  integrity sha512-kY1AZVr2Ra+t+piVaJ4gxaFaReZVH40AKNo7UCX6W+dEwBo/2oZJzqfuN1qLq1oL45o56cPaTXELwrTh8Fpggg==
-
 regexpu-core@^6.3.1:
   version "6.4.0"
   resolved "https://registry.yarnpkg.com/regexpu-core/-/regexpu-core-6.4.0.tgz#3580ce0c4faedef599eccb146612436b62a176e5"