This test verifies that the network process will be killed if the memory limit is reached.
It's done by calling `webkit_network_session_set_memory_pressure_settings()`.
The settings passed as an argument are later applied during the creation of a new network process.

Before 259433@main a new network process was created for every network session but now only one network process is created.
Since this test is not the first one in the test suite, the network process was already created and the memory pressure settings have no effect.

Also, the name of the function is misleading now, because the memory pressure settings are applied to all sessions.