Restored AudioLevelWind as a debug setting

indra/newview/app_settings/settings.xml

@@ -1911,7 +1911,20 @@
       <key>Value</key>
       <real>0.7</real>
     </map>
-	<key>AudioStreamingMedia</key>
+    <!-- <FS> [FIRE-35317] Restore AudioLevelWind debug setting -->
+    <key>AudioLevelWind</key>
+    <map>
+      <key>Comment</key>
+      <string>Audio level of wind noise when standing still</string>
+      <key>Persist</key>
+      <integer>1</integer>
+      <key>Type</key>
+      <string>F32</string>
+      <key>Value</key>
+      <real>0.5</real>
+    </map>
+    <!-- </FS> -->
+    <key>AudioStreamingMedia</key>
     <map>
       <key>Comment</key>
       <string>Enable streaming</string>

indra/newview/llvieweraudio.cpp

@@ -650,8 +650,11 @@ void audio_update_wind(bool force_update)
         // whereas steady-state avatar walk velocity is only 3.2 m/s.
         // Without this the world feels desolate on first login when you are
         // standing still.
-        const F32 WIND_LEVEL = 0.5f;
+        // <FS> [FIRE-35317] Restore AudioLevelWind debug setting
+        //const F32 WIND_LEVEL = 0.5f;
+        static LLUICachedControl<F32> WIND_LEVEL("AudioLevelWind", 0.5f);
         LLVector3 scaled_wind_vec = gWindVec * WIND_LEVEL;
+        // </FS>
 
         // Mix in the avatar's motion, subtract because when you walk north,
         // the apparent wind moves south.