How to ask Safari to never save one password?

Before my very recent upgrade to Tahoe (Safari 26.0.1), when manually inputting my online banking password, I was always given two options - either 'save' or 'not now'. This is one password I never want saved. In previous versions there was an option to click 'never'. That was for some reason removed.

Now, with Tahoe, I'm given only one option - save. Which I do not want to do! The only way out of it is to press the Escape key. I really do not know what Apple were thinking with this change.

Bottom line - how do I instruct Safari to NEVER save this one particular password?

Thanks in advance