Populate alt attribute on breadcrumb ellipse icon

I am building an application that has to cater for people with disabilities including visually impaired.
I need to populate the alt attribute of the breadcrumb image with the text of the links that have been replaced by the ellipses icon.
Is there a prop for this? I haven’t found one in the docs. If not how would I get access to the html element?
I am using Vue 3. I don’t think the TemplateRef is possible because the image is dynamic and within the iconic components. Its a button tag with class breadcrumbs-collapsed-indicator
Any ideas ?