[Mobile] Incorrect user data in Poll Vote Result list

[sheisThanhHien]

Description: List user vote ở clan hiện avatar user đang lấy của user profile, không phải clan profile
OS: Android, iOS

[thanhlichncc]

android:
Root cause: Poll Detail always used the global displayName and avatarUrl, ignoring clan-specific profile fields.
Solution: Prioritize clanNick and clanAvatar, then fall back to the global display name and avatar.
Test cases:
Verify Poll Detail shows the clan nickname and clan avatar for voters in a clan.
Verify Poll Detail falls back to the global display name when the clan nickname is empty.
Verify Poll Detail falls back to the user avatar when the clan avatar is empty.
Verify Poll Detail shows the global user profile correctly outside a clan.

ios:
Root Cause: The poll detail view always fetched the default global user profile for voters, completely ignoring the clanNick and clanAvatar data when the poll was located inside a clan.
Solution: Fetched the ClanMemberRecord list from the local database for the current clan, and updated the mapping logic to prioritize displaying clan-specific avatars and nicknames over the default global profiles.
Test Cases:
Verify that viewing a poll inside a clan correctly displays the voters' clan avatars and clan nicknames.
Verify that viewing a poll inside a clan correctly falls back to the global avatar and display name if the voter hasn't set clan-specific ones.
Verify that viewing a poll inside a Direct Message (DM) correctly displays the voters' default global avatar and display name.