Considering the position you are in, I would suggest that you fully embrace the training program which your employers not only are well within their rights to implement, but more importantly that is absolutely in your interest as an individual to learn new skills In life.
Think of it as being gifted an opportunity to spend weeks and weeks learning new skills, whether they be related to your current role, or even skills and abilities more in line with perhaps that alternative career you’ve always longed for, and being paid to do so !
You can do your gardening and sunbathing at the weekend.
Ignore the idle chatter and negativity from your colleagues ... Embrace the training course, make a list of all of the topics you grasp every week and bore the hell out of your boss with them during each weekly meeting !
Do this for yourself, not for your employer, and you’ll never look back.
Don’t forget that this period also presents an opportunity for employers to downscale their workforce. If as an employer you know that you had to lose people, where would you start looking ? ... Maybe at those who complained about being paid to learn new skills, or those who embraced the opportunity for both themselves and the future of your company ?