Fixed selection of clock slider

This CL makes sure we announce the range of slider without requiring a
custom accesibility delegate. Having a custom delegate removes any
pre-defined slider a11y features which leads to more issues.

Bug: 418222523
Flag: EXEMPT bugfix
Test: Tested by building & installing picker on local, checking talkback
announcement, also by checking if we are able to change clock face width
using talkback.
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:d5116d0e6932318aac9ad38b0616859a575c572d)
Merged-In: I00c25c943ee089680c29d0cccd19eaf5b76610db
Change-Id: I00c25c943ee089680c29d0cccd19eaf5b76610db