More diagnostics for slow operations

- Add more watchdogs and more context to metrics retrieval.
- Log first alias when too many keys are listed.
- Drop a couple of superfluous comments.

Bug: 319563050
Bug: 380879713
Test: adb logcat on device with large number of keys
Change-Id: I5484b131e45c5fc1d39810f26104db46cb7aae7a
diff --git a/keystore2/src/database/tests.rs b/keystore2/src/database/tests.rs
index 381a45a..4ada694 100644
--- a/keystore2/src/database/tests.rs
+++ b/keystore2/src/database/tests.rs
@@ -2832,6 +2832,7 @@
             let batch_size = crate::utils::estimate_safe_amount_to_return(
                 domain,
                 namespace,
+                None,
                 &keys,
                 crate::utils::RESPONSE_SIZE_LIMIT,
             );