Description:
------------
Sometimes exceptions are caught by SoapServer::handle(), and sometimes not. Particularly, exceptions of type Error are caught, while exceptions of type Exception are not.

Consider the test script. There are two lines throwing exceptions that are commented out.

By sending a request to the soap server, the file `response.txt` is created with the expected soap response.

By uncommenting the first exception `(1)` and sending a request to the soap server, the file `exception.txt` is created with the following contents:

Uncaught exception: bar

By uncommenting the second exception `(2)` and sending a request to the soap server, the file `exception.txt` is not created! But the file `response.txt` is created with the following contents:

<?xml version="1.0" encoding="UTF-8"?>
<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"><SOAP-ENV:Body><SOAP-ENV:Fault><faultcode>SOAP-ENV:Server</faultcode><faultstring>foo</faultstring></SOAP-ENV:Fault></SOAP-ENV:Body></SOAP-ENV:Envelope>

It is surprising that the second exception never reaches the exception handler. Instead, the exception seems to be caught inside SoapServer::handle(), and the exception message is sent as a soap fault to the client.

Test script:
---------------
Server script, uncomment the exceptions, one after the other, to see the strange behavior:
<?php

set_exception_handler(function(Throwable $Exception) {
 file_put_contents(__DIR__.'/exception.txt', 'Uncaught exception: '.$Exception->getMessage());
});

function SoapFunction() {
//   throw new Exception('bar'); // (1) Invokes the exception handler
//   throw new Error('foo'); // (2) Does not invoke the exception handler!
}

$Server = new SoapServer(null, ['uri' => 'MyNamespace']);
$Server->addFunction('SoapFunction');
ob_start();
$Server->handle();
file_put_contents(__DIR__.'/response.txt', ob_get_flush());



Client script, change http://www.example.com/server.php so that it points to the server script above:
<?php

$Client = new SoapClient(null, ['uri' => 'MyNamespace', 'location' => 'http://www.example.com/server.php']);
$Client->__soapCall('SoapFunction', []);


Expected result:
----------------
By uncommenting the second exception `(2)` and sending a request to the soap server, I would expect that the file `exception.txt` was created with the following contents:

Uncaught exception: foo

Actual result:
--------------
By uncommenting the second exception `(2)` and sending a request to the soap server, the file `response.txt` is created with the following contents:

<?xml version="1.0" encoding="UTF-8"?>
<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"><SOAP-ENV:Body><SOAP-ENV:Fault><faultcode>SOAP-ENV:Server</faultcode><faultstring>foo</faultstring></SOAP-ENV:Fault></SOAP-ENV:Body></SOAP-ENV:Envelope>