[HttpKernel] fixed wrong reference in TraceableEventDispatcher
bug #10191 [HttpKernel] fixed wrong reference in TraceableEventDispatcher (fabpot)

This PR was merged into the 2.3 branch.

Discussion
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[HttpKernel] fixed wrong reference in TraceableEventDispatcher

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | #9748, #9727
| License       | MIT
| Doc PR        | n/a

This PR fixes #9748 and #9727 by removing the `id` state. Only private method signatures have been changed, so that qualifies for a fix in 2.3.

The `getNotCalledListeners()` is a bit special as it tries to get non-called listeners. It passes `null` as the event id as if a listener has been called more than once, getting the first call is enough.

Commits
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acd3317 [HttpKernel] fixed wrong reference in TraceableEventDispatcher