The mask record was installed only after the REST edit returned and was
retired from the cached on_thread_update callback. Gateway updates can land
while the edit is in flight, and discord.py mutates the cached thread before
scheduling callbacks, so batched updates all report the final name. Either
way a moderator's restore of Hermes's title could render the opening name.
Record the guarded attempt before awaiting the edit, advance or retire it
from on_raw_thread_update, and on failure or cancellation drop only the
record that attempt still owns. The record store and _format_thread_chat_name
move into adapter_thread_titles.py so adapter.py does not grow.
Rename-only part of #132758's f67ef417e0; its message-id, slash/voice and
composed-contract changes are left to their own PRs.
Co-authored-by: Andrex Ibiza, MBA <andrexibiza@gmail.com>
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