Add debug setting LiruHighlightNewInventory to prevent selection being changed on accepting new inventory.

indra/newview/app_settings/settings.xml

@@ -742,6 +742,17 @@
       <key>Value</key>
       <integer>0</integer>
     </map>
+    <key>LiruHighlightNewInventory</key>
+    <map>
+      <key>Comment</key>
+      <string>When false, new inventory items will not be highlighted upon being accepted.</string>
+      <key>Persist</key>
+      <integer>1</integer>
+      <key>Type</key>
+      <string>Boolean</string>
+      <key>Value</key>
+      <boolean>1</boolean>
+    </map>
     <key>LiruLegacyDisplayMuteds</key>
     <map>
       <key>Comment</key>

indra/newview/llviewermessage.cpp

@@ -1261,6 +1261,7 @@ void open_inventory_offer(const uuid_vec_t& objects, const std::string& from_nam
 			LLInventoryView::showAgentInventory(TRUE);
 		}
 
+		if (!gSavedSettings.getBOOL("LiruHighlightNewInventory")) return;
 		////////////////////////////////////////////////////////////////////////////////
 		// Highlight item
 		LL_DEBUGS("Messaging") << "Highlighting" << obj_id  << LL_ENDL;