[Paginator] - NVDA lector read buttons twice

[lstanicki]

Reproduction

Steps to reproduce:

1. Lanuch NVDA lector
2. TAB to pagination, eg. next page button
3. Lector will read it "next page button next page"

Expected Behavior

What behavior were you expecting to see?
Lector will read buttons only once.

Actual Behavior

What behavior did you actually see?
Lector read buttons twice.

Environment

• Angular: 8.0.3
• CDK/Material: 80.2
• Browser(s): Chrome, Firefox
• Operating System (e.g. Windows, macOS, Ubuntu): Windows 10

Solution

You can add [attr.aria-describedby]="null" and it will be work correctly.

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