feat(esp32): throttle Wi-Fi TX during Matter BDX OTA (v1.1.5) + subscription-log ANSI fix - #84

Two reliability changes for the ESP32 esp-matter node, both prompted by the node-35 phy_init brownout investigation (#83).

1. Throttle Wi-Fi TX during a Matter (BDX) OTA (feat, v1.1.5)

The #12 brownout mitigation drops Wi-Fi TX power for the concurrent flash-write + TX window of an OTA, but it only covered the HTTP break-glass path (https_ota_task). The primary Matter (BDX) OTA path ran the whole download+apply at the full 20 dBm ceiling.

• New HisenseOTARequestorDriver : ExtendedOTARequestorDriver lowers TX on HandleIdleStateExit() (update starting) and restores on HandleIdleStateEnter() (back to idle on any path: done/abort/timeout).
• Registered via esp_matter_ota_requestor_set_config() right after esp_matter::start() (before the async kDnssdInitialized auto-start consumes the driver).
• Capture-once + restore-on-every-idle-enter, mirroring the HTTP path's save/restore discipline so the node never sticks at 10 dBm.
• Reuses the existing HISENSE_OTA_TX_POWER_QDBM (10 dBm). Not a substitute for the bulk cap; it lowers brownout probability during the OTA window.
• PROJECT_VER 1.1.4 -> 1.1.5 (int 10105).

2. Strip ANSI before the subscription-log grep (fix)

matter-server colourises its logs, so a \x1b[0m reset sits between <Node:N> and the message. The anchored <Node:N> (Re-)?Subscription succeeded pattern never matched, hard-failing check_subscription_log on otherwise-healthy flashes (node 35 v1.1.4: version confirmed, node available + subscribed, gate still errored). Strip ANSI first in both esp32-release.sh and ota-release.sh; also bring the esp32 script up to the ameba behaviour (match Re-Subscription, tail -1 the newest, poll for the late resubscribe).

Validation

• Built (debug flavour), delta-OTA flashed to node 35 (first attempt, clean).
• SoftwareVersionString=1.1.5 (int 10105) sustained; re-interviewed; subscribable.
• check_subscription_log now passes (matter-server log confirms: <Node:35> Subscription succeeded).
• Live diagnostics: CompressorHz=63, Features1=0xC0010519 (valid), Faults1=0x80000000 (valid, no faults).
• The TX throttle activates on the next OTA (running firmware must already carry it), so it protects v1.1.5 -> future updates.

Assisted-by: AI