Add missing waitUntil method to FakeInvokedProcess

[yondifon]

Add missing waitUntil method to FakeInvokedProcess

Problem

The FakeInvokedProcess class was missing the waitUntil method that exists in InvokedProcess, causing test failures when using faked processes.

Solution

Added waitUntil method to both the contract interface and FakeInvokedProcess implementation with comprehensive tests.

Example

Before: This would fail with faked processes

//test 
Process::fake([
    'long-process *' => Process::describe()
          ->output('booting')
          ->output('ready')
          ->iterations(2),
]);

// code
$process = Process::start('long-process');
$result = $process->waitUntil(fn($type, $buffer) => str_contains($buffer, 'ready'));

After: Now works perfectly
// Same code now works with faked processes
$this->assertTrue($result->successful());

Benefits

• Consistent behavior between real and faked processes
• Enables proper testing of asynchronous process workflows
• Fully backward compatible

[taylorotwell]

Why is out hard-coded and it never passes err if it exists?

[yondifon]

Why is out hard-coded and it never passes err if it exists?

totally missed this; thanks. pushed a changed.

[taylorotwell]

What if I invoke waitUntil twice?

[yondifon]

What if I invoke waitUntil twice?

d6ab3b0

here's a commit for tests along with that for wait method too.