CoroutineExceptionHandler creation takes longer than expected > 100ms

[HeroOussama]

Describe the bug

The creation of CoroutineExceptionHandler takes around 100ms which is causing a delay in calling our API's

val exceptionHandler = CoroutineExceptionHandler { _, exception ->
       pagingStateLiveData.postValue(QcResult.Error(exception))
   }
val start = System.currentTimeMillis()
coroutineScope.launch(exceptionHandler) {
             println("It took ${System.currentTimeMillis() - start} ms")
}

Lib version
1.7.3

Provide a Reproducer

• to reproduce it just create an empty CoroutineExceptionHandler and set a start and end timer. and observe.

[dkhalanskyjb]

What you're measuring is the time to start the coroutine. To measure the time it takes to create a CoroutineExceptionHandler, use this code:

import kotlinx.coroutines.*

fun main() {
    val start = System.currentTimeMillis()
    val exceptionHandler = CoroutineExceptionHandler { _, exception ->
        println("something")
    }
    println("It took ${System.currentTimeMillis() - start} ms")
}

This prints 5 ms on a fairly slow machine: https://pl.kotl.in/CnqB3KhQk