Fix errant VerifyOrReturn in CASESession (#23944)

In CASESession::HandleSigma2 it should be VerifyOrExit not
VerifyOrReturn.

Otherwise, if it fails, a status report message won't be sent as
intended.

src/protocols/secure_channel/CASESession.cpp

@@ -1042,7 +1042,7 @@ CHIP_ERROR CASESession::HandleSigma2(System::PacketBufferHandle && msg)
 
     // Verify that responderNodeId (from responderNOC) matches one that was included
     // in the computation of the Destination Identifier when generating Sigma1.
-    VerifyOrReturnError(mPeerNodeId == responderNodeId, CHIP_ERROR_INVALID_CASE_PARAMETER);
+    VerifyOrExit(mPeerNodeId == responderNodeId, err = CHIP_ERROR_INVALID_CASE_PARAMETER);
 
     // Construct msg_R2_Signed and validate the signature in msg_r2_encrypted
     msg_r2_signed_len = TLV::EstimateStructOverhead(sizeof(uint16_t), responderNOC.size(), responderICAC.size(),