wifi: rtw89: fix CTS transmission issue with center frequency deviation

The CTS cannot be received by the peer due to center frequency
deviation. This issue can be solved by correct settings to
transmit proper CTS.

Signed-off-by: Kuan-Chung Chen <damon.chen@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Link: https://msgid.link/20240423121247.24714-1-pkshih@realtek.com