JIRA: https://jira.spring.io/browse/INT-4072
When `publishSubscribeChannel` is with `applySequence = true`, a `messageToSend` is overridden with `sequenceDetails` using `MessageBuilder`, therefore a new fresh `Message`.
In case of state propagation, e.g. `SecurityContextPropagationChannelInterceptor`, we just lost the state from the `ThreadStatePropagationChannelInterceptor.MessageWithThreadState` because of new `Message<?>`
* Add into `BroadcastingDispatcher` the logic to delegate `pushSequenceDetails` into `MessageWithThreadState` directly do not lose the `state`
* Make `ThreadStatePropagationChannelInterceptor` as `MessageBuilderFactory`-aware and use it to rebuild an `original` `Message<?>` in the `MessageWithThreadState` to populate `SequenceDetails`
**Cherry-pick to 4.2.x**
Provide an explicit order for `publishSubscribeChannel` subscribers
Fixes GH-1847 (https://github.com/spring-projects/spring-integration/issues/1847)
Fix mutation in the `ThreadStatePropagationChannelInterceptor`
Since `BroadcastingDispatcher` invokes `pushSequenceDetails` for each subscribed handler,
make `MessageWithThreadState` as immutable and return a new instance via `cloneWithSequenceDetails()` method with particular `sequenceDetails`.
Previous mutable solution ended up with the issue of concurrent modification.
* Introduce `CloneableMessage` abstraction to let any custom `Message` to return `MessageBuilder` with desired context.
* Introduce `DelegatingMessageBuilder` as an extension of the `MessageBuilder` to let custom `CloneableMessage` to return desired customization.
* Add into `MessageBuilder#fromMessage()` `if` for the `CloneableMessage`
* Add into `MutableMessageBuilder` a `warn` about `CloneableMessage`
* Revert changes in the `BroadcastingDispatcher` in favor of `CloneableMessage` in the `MessageBuilder`
* Redo `ThreadStatePropagationChannelInterceptor#MessageWithThreadState` logic to be based on the `CloneableMessage` and `DelegatingMessageBuilder` extension.
Introduce `MessageDecorator` contract
Remove `CloneableMessage` aspect and everything around
`MessageWithThreadState` is now `MessageDecorator` and `BroadcastingDispatcher` check if incoming `message` is `MessageDecorator` and performs its `decorateMessage` after `builder`
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