Refactor SendTo and Subscription Method Return Value Handlers to use …

[catturtle123]

PR Title

Propagate native STOMP headers to broker via HeaderFilter

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Summary

This PR implements the propagation of native STOMP headers based on a predicate, as discussed in previous feedback. The core focus is ensuring that specific native headers (e.g., those with an x- prefix) are correctly carried over to the broker-bound messages.

Key Implementation Details:

• Native Header Filtering: Configured addHeaderFilter to propagate native headers starting with the x- prefix to response messages.
• Updated SendToMethodReturnValueHandler: Supports header propagation for @SendTo responses.
• Updated SubscriptionMethodReturnValueHandler: Supports header propagation for @SubscribeMapping responses.
• Updated unit tests to verify native header propagation via SimpMessageHeaderAccessor

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Local Test (not included in this PR)

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Related Issues

• Supersedes Make SendToMethodReturnValueHandler and SubscriptionMethodReturnValueHandler customizable, to allow for pass-through of message headers #36179
• Fixes Make SendToMethodReturnValueHandler and SubscriptionMethodReturnValueHandler customizable, to allow for pass-through of message headers #36168

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