Classification config changes (#17892)

* Only auto-populate some config fields down to the camera level

- Don't populate LPR and face global-only settings down to the camera level
- Ensure LPR mixin uses camera level min_area
- Explicitly forbid extra config values for LPR and face

* lpr docs tweak

* remove extra text already in i18n key

* consistency

web/src/views/live/LiveCameraView.tsx

@@ -898,8 +898,7 @@ function PtzControlPanel({
               <p>
                 {clickOverlay
                   ? t("ptz.move.clickMove.disable")
-                  : t("ptz.move.clickMove.enable")}{" "}
-                click to move
+                  : t("ptz.move.clickMove.enable")}
               </p>
             </TooltipContent>
           </Tooltip>