chore: add iterate raw for multi (#25464)

Author: 0xstepit

CHANGELOG.md

@@ -64,6 +64,7 @@ Ref: https://keepachangelog.com/en/1.0.0/
 * (baseapp) [#24655](https://github.com/cosmos/cosmos-sdk/pull/24655) Add mutex locks for `state` and make `lastCommitInfo` atomic to prevent race conditions between `Commit` and `CreateQueryContext`.
 * (proto) [#24161](https://github.com/cosmos/cosmos-sdk/pull/24161) Remove unnecessary annotations from `x/staking` authz proto.
 * (x/bank) [#24660](https://github.com/cosmos/cosmos-sdk/pull/24660) Improve performance of the `GetAllBalances` and `GetAccountsBalances` keeper methods.
+* (collections) [#25464](https://github.com/cosmos/cosmos-sdk/pull/25464) Add `IterateRaw` method to `Multi` index type to satisfty query `Collection` interface.
 
 ### Bug Fixes
 

collections/indexes/multi.go

@@ -119,6 +119,12 @@ func (m *Multi[ReferenceKey, PrimaryKey, Value]) Iterate(ctx context.Context, ra
 	return (MultiIterator[ReferenceKey, PrimaryKey])(iter), err
 }
 
+func (m *Multi[ReferenceKey, PrimaryKey, Value]) IterateRaw(
+	ctx context.Context, start, end []byte, order collections.Order,
+) (collections.Iterator[collections.Pair[ReferenceKey, PrimaryKey], collections.NoValue], error) {
+	return m.refKeys.IterateRaw(ctx, start, end, order)
+}
+
 func (m *Multi[ReferenceKey, PrimaryKey, Value]) Walk(
 	ctx context.Context,
 	ranger collections.Ranger[collections.Pair[ReferenceKey, PrimaryKey]],