I agree completely. I actually think that’s preferable to a major in computational neuro (I’m a neuro prof).
A major in data science or computer science or another core computational field will be excellent and marketable preparation for a variety of careers, including but not limited to a career in computational neuro.
You can take neuro-flavored classes in whatever form is offered (concentration, double major, minor, whatever) to make that your “applied domain”.
There will definitely be professors that you can work with to do computational neuro research projects. You’ll have to be proactive in seeking them out, but all your schools of interest will have them.
A major in “computational neuroscience” or any other neuro field can pigeon-hole you into a niche with limited employment prospects.