chore(prettier): align configuration with stylelint rules (#25434)

core/.prettierrc.js

@@ -0,0 +1,11 @@
+module.exports = {
+  ...require('@ionic/prettier-config'),
+  overrides: [
+    {
+      files: ['**/*.scss'],
+      options: {
+        singleQuote: false,
+      },
+    },
+  ],
+};

core/package.json

@@ -117,6 +117,5 @@
   "homepage": "https://ionicframework.com/",
   "jest": {
     "preset": "@stencil/core/testing"
-  },
-  "prettier": "@ionic/prettier-config"
+  }
 }