fix(gateway): harden BlueBubbles webhooks and duplicate delivery

[Oceanswave]

Summary

• Reapply the BlueBubbles webhook hardening changes on top of current main.
• Make webhook registration event-aware and avoid unregistering the gateway-owned webhook from one-shot outbound senders.
• Add duplicate inbound-message guards for BlueBubbles new-message/updated-message delivery, including DM variants that arrive with different chat IDs/GUIDs.
• Preserve webhook URL/password masking in logs.

Why

BlueBubbles/iMessage is still seeing duplicate replies and webhook handling problems locally. This keeps receipt/status update webhooks from triggering duplicate conversational handling and prevents outbound one-shot sends from interfering with the long-running gateway listener/registration.

Test Plan

• python -m pytest tests/gateway/test_bluebubbles.py -q
• python -m py_compile gateway/platforms/bluebubbles.py

Related issues

• [Bug]: BlueBubbles outbound chat resolution can misroute DM replies to group chats. Privacy leak! #24157
• [Bug]: send_message cannot resolve BlueBubbles targets — missing target pattern in _parse_target_ref and no contact enumeration in channel directory #23409
• [Feature] BlueBubbles adapter: add group chat filtering (IGNORE_GROUP_CHATS or ALLOWED_CHATS) #33489
• [Bug]: BlueBubbles webhook payload chatGuid is null — DM replies go to wrong chat #8514

[alt-glitch]

Competing with open #32691 (broader scope BlueBubbles webhook hardening). Also overlaps with #18395 (dedup fix). Related issues: #33327, #24157, #23409.

[Oceanswave]

Closing this in favor of the consolidated BlueBubbles hardening PR: #45317

That PR folds the repeated local reapply work into one clean branch and explicitly documents the purpose/struggles: BlueBubbles updates can produce duplicate inbound iMessage turns, status-only updated-message webhook echoes, fragile typing behavior, and one-shot outbound adapter conflicts with the gateway-owned webhook listener. It also includes the focused regression suite covering the consolidated behavior.

[Oceanswave]

Superseded by consolidated BlueBubbles hardening PR #45317.