Update res/controllers/Traktor-Kontrol-S4-MK3.js

Co-authored-by: Antoine Colombier <7086688+acolombier@users.noreply.github.com>

Author: ywwg

res/controllers/Traktor-Kontrol-S4-MK3.js

@@ -2084,11 +2084,7 @@ class S4Mk3Deck extends Deck {
                     // We do want to  reset the slider to the physical position when receiving the
                     // first value.
                     if (!receivingFirstValue) {
-                        let shiftValue = this.shifted;
-                        if (ShiftTempoMode) {
-                            shiftValue = !shiftValue;
-                        }
-                        if (shiftValue) {
+                        if (this.shifted ^ ShiftTempoMode ) {
                             return;
                         }