eap_proxy: Flush pmksa only on CARD_STATE_ABSENT

Both CARD_STATE_ABSENT and CARD_STATE_ERROR were considered for
pmksa flush. This caueses pmksa flush even though SIM card is present.

fix this problem by using only CARD_STATE_ABSENT in conditioning
logic to flush pmksa entries for SIM/AKA/AKA` networks.

CRs-Fixed: 2000443
Change-Id: I90cfb783b5c8aadf98ec455e03f99669bfa676fd
1 file changed