Inventory decline notifications are annoying, add LogInventoryDecline from upstream.

View without space changes please~

indra/newview/app_settings/settings.xml

@@ -18029,6 +18029,17 @@ This should be as low as possible, but too low may break functionality</string>
       <integer>0</integer>
     </map>
     
+    <key>LogInventoryDecline</key>
+    <map>
+      <key>Comment</key>
+      <string>Log in system chat whenever an inventory offer is declined</string>
+      <key>Persist</key>
+      <integer>1</integer>
+      <key>Type</key>
+      <string>Boolean</string>
+      <key>Value</key>
+      <integer>1</integer>
+    </map>
     <key>UseHTTPInventory</key>
     <map>
       <key>Comment</key>