Custom error handlers interrupts the amplification

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The trait `TTaskExecutor` (traits or classes like it) opens custom exceptionHandler.

```smalltalk
executeTask: aTaskExecution
[ self noteBusy. aTaskExecution value. self noteFree ]
on: Error
do: [ :error | self exceptionHandler handleException: error ]
```
The tests using these classes may interrupted and never be finished.
(`TKTLocalProcessTaskRunner` uses `TTaskExecutor`)
```smalltalk
testCacheSizeFor_amp_A78
| cache requestedSize tmp_yxDSiRuEgR1 tmp_Wh1LQxSblB2 tmp_P3cDMPRpKV3 tmp_CQXiNqyAMj4 tmp_Gka6xX3Oxw5 tmp_MfFvl0EPML6 tmp_W3fLy0ggoO7 tmp_pxmJXKfM6v8 |
cache := BlLocalImageCache new.
tmp_yxDSiRuEgR1 := cache taskitRunner: TKTLocalProcessTaskRunner new.
tmp_P3cDMPRpKV3 := cache defaultImageSizes.
tmp_Wh1LQxSblB2 := tmp_P3cDMPRpKV3 second.
requestedSize := tmp_Wh1LQxSblB2 - 1.
tmp_CQXiNqyAMj4 := cache defaultImageSizes.
requestedSize := tmp_CQXiNqyAMj4 second.
tmp_MfFvl0EPML6 := cache defaultImageSizes.
cache initHousekeeping.
tmp_Gka6xX3Oxw5 := tmp_MfFvl0EPML6 third.
requestedSize := tmp_Gka6xX3Oxw5 + 1.
tmp_pxmJXKfM6v8 := cache defaultImageSizes.
tmp_W3fLy0ggoO7 := tmp_pxmJXKfM6v8 last.
requestedSize := tmp_W3fLy0ggoO7 + 1
```

Start by reading the TTaskExecutor executeTask: method and the TKTLocalProcessTaskRunner use mentioned in the issue. Reproduce the interruption with the shown testCacheSizeFor_amp_A78 example and trace how the custom exceptionHandler affects test execution. Done means amplified tests using these task runners are not interrupted prematurely and can finish.

Written by the indexing model from the issue text.