You can change the Go to previous bar command by double-clicking it in the binding editor, and then selecting either Region Boundaries or Region Starts instead of Bars. Here’s a screenshot showing where that’s located:
Unfortunately you won’t be able to perfectly replicate Capo’s old behaviour. Specifically, Capo used to change based on what you currently had selected with the mouse. For example, the left/right arrows would navigate by bars, and once you selected a region it would change to navigate that way.
If this becomes a problem, and you want to have both navigation by bar/beat as well as region-specific navigation, you can create these bindings using different “arrow-like” keys on your keyboard, like the [ and ] keys, or the , and . keys (which are < and > when shift is held).