wifi: rtw89: coex: Clear Bluetooth HW PTA counter when radio state change

Reset the counter no matter Wi-Fi is notified turning into power save or
not. With rest the counter coexistence will recognize Bluetooth is hanged
easily.

Signed-off-by: Ching-Te Ku <ku920601@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20230117114109.4298-3-pkshih@realtek.com