wifi: Fix incorrect instance version

The vts use getAidlInstances to check current HIDL version whether or not
exist in the device manifests.
When there are no instances installed, the suite won't be instantiated

Test: atest -c VtsHalWifiHostapdV1_3TargetTest in S GSI + R build
Bug: 172539662
Change-Id: Ia268282eeeb53a092bb5f36ef0426ac213b45a9f