fix(ORM): support for imported messages in iterators (#11372)

## Description

- adds support for imported messages in iterators

Closes: n/a



---

### Author Checklist

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please add links to any relevant follow up issues.*

I have...

- [x] included the correct [type prefix](https://github.com/commitizen/conventional-commit-types/blob/v3.0.0/index.json) in the PR title
- [x] added `!` to the type prefix if API or client breaking change
- [x] targeted the correct branch (see [PR Targeting](https://github.com/cosmos/cosmos-sdk/blob/master/CONTRIBUTING.md#pr-targeting))
- [x] provided a link to the relevant issue or specification
- [x] followed the guidelines for [building modules](https://github.com/cosmos/cosmos-sdk/blob/master/docs/building-modules)
- [x] included the necessary unit and integration [tests](https://github.com/cosmos/cosmos-sdk/blob/master/CONTRIBUTING.md#testing)
- [ ] added a changelog entry to `CHANGELOG.md`
- [ ] included comments for [documenting Go code](https://blog.golang.org/godoc)
- [ ] updated the relevant documentation or specification
- [ ] reviewed "Files changed" and left comments if necessary
- [ ] confirmed all CI checks have passed

### Reviewers Checklist

*All items are required. Please add a note if the item is not applicable and please add
your handle next to the items reviewed if you only reviewed selected items.*

I have...

- [ ] confirmed the correct [type prefix](https://github.com/commitizen/conventional-commit-types/blob/v3.0.0/index.json) in the PR title
- [ ] confirmed `!` in the type prefix if API or client breaking change
- [ ] confirmed all author checklist items have been addressed 
- [ ] reviewed state machine logic
- [ ] reviewed API design and naming
- [ ] reviewed documentation is accurate
- [ ] reviewed tests and test coverage
- [ ] manually tested (if applicable)

orm/encoding/encodeutil/util.go

@@ -36,7 +36,15 @@ func ValuesOf(values ...interface{}) []protoreflect.Value {
 	n := len(values)
 	res := make([]protoreflect.Value, n)
 	for i := 0; i < n; i++ {
-		res[i] = protoreflect.ValueOf(values[i])
+		// we catch the case of proto messages here and call ProtoReflect.
+		// this allows us to use imported messages, such as timestamppb.Timestamp
+		// in iterators.
+		value := values[i]
+		switch value.(type) {
+		case protoreflect.ProtoMessage:
+			value = value.(protoreflect.ProtoMessage).ProtoReflect()
+		}
+		res[i] = protoreflect.ValueOf(value)
 	}
 	return res
 }

orm/internal/testpb/test_schema.proto

@@ -92,3 +92,15 @@ message ExampleSingleton {
   string foo = 1;
   int32  bar = 2;
 }
+
+message ExampleTimestamp {
+  option (cosmos.orm.v1alpha1.table) = {
+    id: 4
+    primary_key: {fields: "id" auto_increment: true}
+    index: {id: 1 fields: "ts"}
+  };
+
+  uint64 id = 1;
+  string name = 2;
+  google.protobuf.Timestamp ts = 3;
+}