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)

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[github-actions]

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[Cheprer]

Hi @pichlermarc can we move on with this. What is needed here please?

[pichlermarc]

@Cheprer this is already fixed in the latest version AFAIK. #2625

[Cheprer]

@pichlermarc nice, shame that someone else did the same thing again, where this could be merged and fixed much sooner.

[pichlermarc]

@pichlermarc nice, shame that someone else did the same thing again, where this could be merged and fixed much sooner.

Yes, you're right. I really try to do my best but I have to hande too many threads a day on GitHub and Slack - so on my end things tend to fall through the cracks especially on instrumentation packages like @opentelemetry/instrumentation-hapi that have been abandoned for a while.