Button fix when right click with placement building (#1319)

src/js/game/hud/parts/lever_toggle.js

@@ -22,7 +22,9 @@ export class HUDLeverToggle extends BaseHUDPart {
                     leverComp.toggled = !leverComp.toggled;
                     return STOP_PROPAGATION;
                 } else if (button === enumMouseButton.right) {
-                    this.root.logic.tryDeleteBuilding(contents);
+                    if (!this.root.hud.parts.buildingPlacer.currentMetaBuilding) {
+                        this.root.logic.tryDeleteBuilding(contents);
+                    }
                     return STOP_PROPAGATION;
                 }
             }