Extracts all hashtag preference related logic into a new controller
`js/ui/profileModal/ProfileHashtagController.js` to reduce the size of `js/ui/profileModalController.js` and improve maintainability.
- Moves `normalizeHashtagTag`, `formatHashtagTag`, `getResolvedHashtagPreferences`, `setHashtagStatus`, `refreshHashtagBackgroundStatus`, `populateHashtagPreferences`, `renderHashtagList`, `sanitizeHashtagList`, `createHashtagListItem`, `persistHashtagPreferences`, `handleAddHashtagPreference`, `handleRemoveHashtagPreference`, `handleHashtagPreferencesChange`, `describeHashtagPreferencesError`.
- Updates `ProfileModalController` to delegate to `ProfileHashtagController`.
- Reduces `js/ui/profileModalController.js` by ~600 lines.
- Updates file size baseline in `scripts/check-file-size.mjs`.
Passes `npm run lint` and `npm run test:unit`.
Co-authored-by: PR0M3TH3AN <[email protected]>
