Fix EuiccCard#authenticateServer error checking.

We were originally inspecting the wrong tag (TAG_CTX_1), when we should
have been checking TAG_CTX_COMP_1 -> TAG_UNI_2. This was always the case
per SGP.22.

This fix is targeted for Q, and we should offer this as a patch to OEMs
if necessary before then.

Bug: 116056281
Change-Id: Ia78f6f67e433a207b9a5cbe88281365695feef3d
Fix: 116056281
Test: atest FrameworksTelephonyTests