Add some important events to batch & staking to ensure ease of analysis (#9462)

* Add some important events to batch & staking to ensure ease of analysis

* Update frame/staking/src/pallet/mod.rs

Co-authored-by: Zeke Mostov <32168567+emostov@users.noreply.github.com>

* Update lib.rs

* fix test

Co-authored-by: Zeke Mostov <32168567+emostov@users.noreply.github.com>
Co-authored-by: Shawn Tabrizi <shawntabrizi@gmail.com>

substrate/frame/contracts/src/exec.rs

@@ -2506,6 +2506,11 @@ mod tests {
 						event: MetaEvent::System(frame_system::Event::Remarked(BOB, remark_hash)),
 						topics: vec![],
 					},
+					EventRecord {
+						phase: Phase::Initialization,
+						event: MetaEvent::Utility(pallet_utility::Event::ItemCompleted),
+						topics: vec![],
+					},
 					EventRecord {
 						phase: Phase::Initialization,
 						event: MetaEvent::Utility(pallet_utility::Event::BatchInterrupted(