test: ignore more code that jest cannot test (#109)

jest.config.cjs

@@ -38,7 +38,7 @@ module.exports = {
       statements: 98,
       branches: 96,
       functions: 100,
-      lines: 99
+      lines: 100
     }
   }
 }

src/picker/components/Picker/Picker.js

@@ -105,6 +105,8 @@ const isSkinToneOption = element => /^skintone-/.test(element.id)
 //
 
 emojiSupportLevelPromise.then(level => {
+  // Can't actually test emoji support in Jest/JSDom, emoji never render in color in Cairo
+  /* istanbul ignore next */
   if (!level) {
     message = i18n.emojiUnsupportedMessage
   }