has_client: Always write CCC values

We do not trust devices and always write CCC.
It will also help with PTS

Bug: 238171211
Test: atest BluetoothInstrumentationTests
Test: PTS
Tag: #feature
Merged-In: Ifb354d772fcdf6963f24e962e8b2864902bfb8f2
Change-Id: Ifb354d772fcdf6963f24e962e8b2864902bfb8f2
(cherry picked from commit 6aa1e219)