AEC3: Reset the ERLE estimation after a delay change

Bug: webrtc:9685
Change-Id: I3c920bbb07aef513ea14bd0573ac4fd4b278ec89
Reviewed-on: https://webrtc-review.googlesource.com/96681
Reviewed-by: Per Åhgren <peah@webrtc.org>
Commit-Queue: Jesus de Vicente Pena <devicentepena@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#24480}

modules/audio_processing/aec3/aec_state.h

@@ -179,6 +179,7 @@ class AecState {
   const float uncertainty_before_convergence_;
   const bool early_entry_to_converged_mode_;
   const bool early_limiter_deactivation_;
+  const bool reset_erle_after_echo_path_changes_;
   ErlEstimator erl_estimator_;
   ErleEstimator erle_estimator_;
   size_t capture_block_counter_ = 0;