[api-go] Support repeated Any fields

[yuandrew]

Is your feature request related to a problem? Please describe.
Today our Payload visitor will visit Any fields, but we don't properly visit and parse through a map of Any's, i.e. this repeated Any field in our API.

Describe the solution you'd like
This test should pass.

func TestVisitPayloads_ArrayAny(t *testing.T) {
	msg, err := anypb.New(&update.Request{Input: &update.Input{Args: &common.Payloads{
		Payloads: []*common.Payload{{Data: []byte("orig-val")}},
	}}})
	require.NoError(t, err)
	root := &errordetails.MultiOperationExecutionFailure_OperationStatus{Details: []*anypb.Any{msg}}
	var anyCount int
	err = VisitPayloads(context.Background(), root, VisitPayloadsOptions{
		Visitor: func(ctx *VisitPayloadsContext, p []*common.Payload) ([]*common.Payload, error) {
			anyCount++
			// Only mutate if the payloads has "test"
			if len(p) == 1 && string(p[0].Data) == "orig-val" {
				return []*common.Payload{{Data: []byte("new-val")}}, nil
			}
			return p, nil
		},
	})
	require.NoError(t, err)
	require.Equal(t, 1, anyCount)
	update1, err := root.Details[0].UnmarshalNew()

	require.NoError(t, err)
	require.Equal(t, "new-val", string(update1.(*update.Request).Input.Args.Payloads[0].Data))
}

Likely will require enhancing or creating a new case here https://github.com/temporalio/api-go/blob/4c00816d0d87af129f51a33be6f3b2ca20e3ccb7/cmd/proxygenerator/interceptor.go#L262

Additional context
Add any other context or screenshots about the feature request here.

[yuandrew]

When this is implemented, this is another test that could be added

func TestOperationStatus(t *testing.T) {
	require := require.New(t)

	var messageType protoreflect.MessageType
	protoregistry.GlobalTypes.RangeMessages(func(mt protoreflect.MessageType) bool {
		if string(mt.Descriptor().FullName()) == "temporal.api.errordetails.v1.MultiOperationExecutionFailure.OperationStatus" { 
			messageType = mt
		}
		return true
	})

	// Create empty instance and populate with test values
	msg := messageType.New().Interface().(proto.Message)
	var totalCount, count int
	populatePayload(&msg, msg, require, &totalCount, &count)

	require.Equal(0, count)
	require.Equal(1, totalCount)
}