♻️(frontend) add categories on top of the EmojiPicker

In a recent fix we had to remove the categories
from the EmojiPicker component due to a bug in the
underlying library. This commit reintroduces the
categories feature, placing them at the top of the
picker for improved user experience. The
categories help users quickly find emojis
by grouping them into relevant sections.

We set the default color as well to ensure
consistency across the emoji picker.

Author: AntoLC

src/frontend/apps/impress/src/features/docs/doc-editor/components/EmojiPicker.tsx

@@ -23,12 +23,10 @@ export const EmojiPicker = ({
       <Picker
         data={emojiData}
         locale={i18n.resolvedLanguage}
-        navPosition="none"
         onClickOutside={onClickOutside}
         onEmojiSelect={onEmojiSelect}
         previewPosition="none"
         skinTonePosition="none"
-        theme="light"
       />
     </Box>
   );