Update the security logs for better understanding

We have had a good deal of reports about the logs
that come out of the security_level file and these update
the logs where there have been bugs made for these in
the past.

Test: atest keystore2_test
Test: atest CtsKeystoreTestCases
Change-Id: I89ec4f7fde67e4db16c1102f815abda9ea796163
diff --git a/keystore2/src/legacy_importer.rs b/keystore2/src/legacy_importer.rs
index f64af0b..f9d5d1b 100644
--- a/keystore2/src/legacy_importer.rs
+++ b/keystore2/src/legacy_importer.rs
@@ -928,6 +928,6 @@
         },
         |_| Ok(()),
     )
-    .context(ks_err!())?;
+    .context(ks_err!("Key blob upgrade failed, possibly invalid keyblob for uuid {uuid:?}"))?;
     Ok((key_characteristics_to_internal(characteristics), upgraded_blob))
 }