wifi: Replace isTWTSupported with isHe8ssCapableAp

This commit replaces the isTWTSupported with isHE8ssCapableAP
considering the new requirement to look for AP's 8ss capability
instead of TWT support of the AP.
This new enhancement is as per the revised requirement.

Change-Id: Ic267235e7735341435cd2309b6b91df9458ca503
CRs-Fixed: 2544022
3 files changed