feat(x/gov): emit proposer address in submit proposal event (backport #19842) (#19844)

Co-authored-by: Aryan Tikarya <akaladarshi@gmail.com>
Co-authored-by: marbar3778 <marbar3778@yahoo.com>
Co-authored-by: Julien Robert <julien@rbrt.fr>

Author: 4 people

CHANGELOG.md

@@ -38,14 +38,18 @@ Ref: https://keepachangelog.com/en/1.0.0/
 
 ## [Unreleased]
 
-## Bug Fixes
-
-* (crypto) [#19691](https://github.com/cosmos/cosmos-sdk/pull/19745) Fix tx sign doesn't throw an error when incorrect Ledger is used.
-
 ### Features
 
 * (types) [#19759](https://github.com/cosmos/cosmos-sdk/pull/19759) Align SignerExtractionAdapter in PriorityNonceMempool Remove.
 
+### Improvements 
+
+* (x/gov) [#19844](https://github.com/cosmos/cosmos-sdk/pull/19844) Emit the proposer of governance proposals.
+
+## Bug Fixes
+
+* (crypto) [#19691](https://github.com/cosmos/cosmos-sdk/pull/19745) Fix tx sign doesn't throw an error when incorrect Ledger is used.
+
 ## [v0.50.5](https://github.com/cosmos/cosmos-sdk/releases/tag/v0.50.5) - 2024-03-12
 
 ### Features

x/gov/keeper/proposal.go

@@ -123,6 +123,7 @@ func (keeper Keeper) SubmitProposal(ctx context.Context, messages []sdk.Msg, met
 		sdk.NewEvent(
 			types.EventTypeSubmitProposal,
 			sdk.NewAttribute(types.AttributeKeyProposalID, fmt.Sprintf("%d", proposalID)),
+			sdk.NewAttribute(types.AttributeKeyProposalProposer, proposer.String()),
 			sdk.NewAttribute(types.AttributeKeyProposalMessages, msgsStr),
 		),
 	)

x/gov/types/events.go

@@ -22,6 +22,7 @@ const (
 	AttributeValueExpeditedProposalRejected = "expedited_proposal_rejected" // didn't meet expedited vote quorum
 	AttributeValueProposalFailed            = "proposal_failed"             // error on proposal handler
 	AttributeValueProposalCanceled          = "proposal_canceled"           // error on proposal handler
+	AttributeKeyProposalProposer            = "proposal_proposer"           // account address of the proposer
 
 	AttributeKeyProposalType   = "proposal_type"
 	AttributeSignalTitle       = "signal_title"