docs(agents): list ReconnectingWebSocketListener as temporarily frozen

  The .fernignore freeze added in this PR protects the listener bug fixes
  from regen, but the regen workflow in AGENTS.md drives off the "Current
  temporarily frozen files" list. Add the listener there so the next regen
  applies the documented .bak swap/restore on it

Author: GregHolmes

AGENTS.md

@@ -48,6 +48,7 @@ How to identify:
 Current temporarily frozen files:
 
 - `src/main/java/com/deepgram/core/ClientOptions.java` - preserves release-please version markers and correct SDK header constants that Fern currently overwrites; use the standard `.bak` swap/restore workflow during regen review
+- `src/main/java/com/deepgram/core/ReconnectingWebSocketListener.java` - carries bug fixes for `maxRetries(0)` semantics ("connect once, don't retry") and a configurable `connectionTimeoutMs` field (was hardcoded 4000ms), plus an `applyOptionsOverride(...)` hook used by `TransportWebSocketFactory` to apply per-transport reconnect policy; pull this back out once the fixes are upstreamed into the Fern generator. Use the standard `.bak` swap/restore workflow during regen review.
 
 ### Prepare repo for regeneration