Correct request_license_test failures

[ Merge of http://go/wvgerrit/42103 ]

* While deprecating keyboxes as identification, some code to
  restore a license was mistakenly removed in http:://go/wvgerrit/36740,
  http://ag/3442777

* Corrections to keep track of cipher mode, call SelectKeys when cipher
  mode changes and to use the backward compatible LoadKeys call in case
  OEMCrypto is v13.

Bug: 70160032

Test: Ran WV unit/integration tests. Request license test failures
      have been addressed.

Change-Id: Id03c50874085af6d9985d10c19a74a02efb7a1f5

libwvdrmengine/cdm/core/src/license.cpp

@@ -955,6 +955,8 @@ bool CdmLicense::RestoreLicenseForRelease(
     if (!crypto_session_->GenerateDerivedKeys(key_request_,
                                               signed_response.session_key()))
       return false;
+  } else {
+    return KEY_ADDED == HandleKeyResponse(license_response);
   }
 
   if (license.policy().has_renewal_server_url())