bug(autocomplete): matAutocomplete attribute on input tags should not add role="combobox"

[csirota97-a11y]

Is this a regression?

• Yes, this behavior used to work in the previous version

The previous version in which this bug was not present was

No response

Description

Marking an input field as a autocomplete adds role="combobox" attribute which violates WCAG ITEM: 4.1.2 Name, Role, Value.

Reproduction

StackBlitz link:
Steps to reproduce:

1. https://stackblitz.com/edit/components-issue-starter-xjowe1gm?file=src%2Fmain.ts
2. Use browser console to see that input tag has role="combobox"

Expected Behavior

input tag role should accurately reflect input tag

Actual Behavior

input tag has role="combobox" when autocomplete is used

Environment

• Angular: 18-22* not tested on earlier versions
• CDK/Material: 18-22
• Browser(s): Edge, Chrome, Safari
• Operating System (e.g. Windows, macOS, Ubuntu): Mac and Windows