[php-src] Issue #21411: opcache_compile_file() fails to early-bind classes without parents

Issue: https://github.com/php/php-src/issues/21411
Author: rlerdorf

### Description

The following code:

test.inc:
```php
<?php
echo NoParentClass::VALUE . "\n";
class NoParentClass {
    const VALUE = "hello";
}
```

Compiled and loaded via opcache file cache:
```php
<?php
// Step 1: Compile into file cache
opcache_compile_file('/path/to/test.inc');

// Step 2: In a separate process, include from file cache
include '/path/to/test.inc';
```

With INI settings:
```
opcache.enable=1
opcache.enable_cli=1
opcache.file_cache=/tmp/cache
opcache.file_cache_only=1
opcache.file_update_protection=0
```

Resulted in this output:
```
Fatal error: Uncaught Error: Class "NoParentClass" not found in /path/to/test.inc:2
Stack trace:
#0 Command line code(1): include()
#1 {main}
  thrown in /path/to/test.inc on line 2
```

But I expected this output instead:
```
hello
```

### PHP Version

```plain
This affects versions 8.3+ because https://github.com/php/php-src/commit/0600f513b374969992f86591ad9834a32df319a8, which implemented delayed early binding for classes without parents, did not take into account that `opcache_compile_file()` produces unlinked classes with an empty-string `lc_parent_name`, causing `zend_accel_do_delayed_early_binding() to` skip early binding for these classes when loading them from cache.
```

### Operating System

_No response_