bug(matierl/datepicker): Voiceover does not announce current month after clicking next month button

[zarend]

Is this a regression?

• AFAIK no

Description

When using the datepicker with voiceover the month is not announced after clicking the month/previous month buttons.

Reproduction

Steps to reproduce:

1. With screenreader enamed go to basic Datepicker example
2. Open the calendar and navigate to Feb 1, 2022
3. Click the next month button
4. (Calendar displays the month of March 2022 and voiceover does not announce anything)

Expected Behavior

Screenreader should announce Mar 2022

Actual Behavior

screenreader does not announce anything after click the "Next Month" button

Environment

MacOS 12.2 (21D49)
Chrome Version 98.0.4758.80 (Official Build) (x86_64)
Safari Version 15.3 (17612.4.9.1.5)
Voiceover