Ah mine (2017my) doesn't have that part on the dipstick it's just the metal part right up to the handle - that's what i was thinking your was (hence my concern).
I picked up my car 2 weeks ago, drove it 60 miles home and it's been sat in my garage since - spent a few days giving it a full detail and paint protection ready for winter (just bought a set of new alloys with winter tyres ready), did all my checks and found my car has just had new discs + pads F+R, 4 new tyres (budgets 😒 ) and a full service (new filters fitted) so hope it'll be ok for another year.