fix: losing this context on register handler function for hapi

[Cheprer]

Which problem is this PR solving?

• When someone is using also a wrapper on the return function from register handler, due to wrapping by opentelemetry before it without retain the context, the following wrapper loses it.

Short description of the changes

• Use apply to retain the this context of the original function.

[linux-foundation-easycla]

• ✅login: Cheprer / (db51368)

The committers listed above are authorized under a signed CLA.

[github-actions]

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