[time-picker] VoiceOver announces label and suffix's aria-label with each value change

[anezthes]

Tested https://cdn.vaadin.com/vaadin-time-picker/2.1.0-alpha2/demo/#time-picker-basic-demos with VoiceOver on Chrome and Safari.

Focus the first vaadin-time-picker and tab through the values with the Arrow Up and Arrow Down keys. each value change, VoiceOver will announce:

01:00 Arrival hour (hh:mm) Time selector
02:00 Arrival hour (hh:mm) Time selector
...

Formula: <value> <label> <bullet>* <aria-label>.
*Only on Safari.

Compare that to the "Step" vaadin-combo-box in the same demo which only announces the value which IMO is the expected result.

[web-padawan]

Note that label is also announced twice and the second one is most likely because of role="application"
https://github.com/vaadin/vaadin-time-picker/blob/2aeeedda451c9a39005e341689f82ef1d45ec839/src/vaadin-time-picker.html#L59

[web-padawan]

We have removed role="application" in #2201 and addressed many other a11y issues in Vaadin 22. Closing as fixed.