AbstractEntity::build(): Fix \stdClass as array type errors.

[Ambient-Impact]

I've been getting these errors when trying to use the API:

PHP Fatal error:  Uncaught TypeError: Cannot assign stdClass to property DigitalOceanV2\Entity\App::$spec of type array in /var/www/html/vendor/toin0u/digitalocean-v2/src/Entity/AbstractEntity.php:62
Stack trace:
#0 /var/www/html/vendor/toin0u/digitalocean-v2/src/Entity/AbstractEntity.php(35): DigitalOceanV2\Entity\AbstractEntity->build()
#1 /var/www/html/vendor/toin0u/digitalocean-v2/src/Api/App.php(41): DigitalOceanV2\Entity\AbstractEntity->__construct()
#2 [internal function]: DigitalOceanV2\Api\App->DigitalOceanV2\Api\{closure}()
#3 /var/www/html/vendor/toin0u/digitalocean-v2/src/Api/App.php(40): array_map()
#4 /var/www/html/vendor/neurocracy/digitalocean-app-platform-commands/src/Commands/ListCommand.php(22): DigitalOceanV2\Api\App->getAll()
#5 /var/www/html/vendor/symfony/console/Command/InvokableCommand.php(52): Neurocracy\DigitalOcean\AppPlatform\Commands\ListCommand->__invoke()
#6 /var/www/html/vendor/symfony/console/Command/Command.php(315): Symfony\Component\Console\Command\InvokableCommand->__invoke()
#7 /var/www/html/vendor/symfony/console/Application.php(1092): Symfony\Component\Console\Command\Command->run()
#8 /var/www/html/vendor/symfony/console/Application.php(359): Symfony\Component\Console\Application->doRunCommand()
#9 /var/www/html/vendor/symfony/console/Application.php(194): Symfony\Component\Console\Application->doRun()
#10 /var/www/html/vendor/neurocracy/digitalocean-app-platform-commands/bin/do-app(13): Symfony\Component\Console\Application->run()
#11 /var/www/html/vendor/bin/do-app(119): include('...')
#12 {main}
  thrown in /var/www/html/vendor/toin0u/digitalocean-v2/src/Entity/AbstractEntity.php on line 62

Fatal error: Uncaught TypeError: Cannot assign stdClass to property DigitalOceanV2\Entity\App::$spec of type array in /var/www/html/vendor/toin0u/digitalocean-v2/src/Entity/AbstractEntity.php:62
Stack trace:
#0 /var/www/html/vendor/toin0u/digitalocean-v2/src/Entity/AbstractEntity.php(35): DigitalOceanV2\Entity\AbstractEntity->build()
#1 /var/www/html/vendor/toin0u/digitalocean-v2/src/Api/App.php(41): DigitalOceanV2\Entity\AbstractEntity->__construct()
#2 [internal function]: DigitalOceanV2\Api\App->DigitalOceanV2\Api\{closure}()
#3 /var/www/html/vendor/toin0u/digitalocean-v2/src/Api/App.php(40): array_map()
#4 /var/www/html/vendor/neurocracy/digitalocean-app-platform-commands/src/Commands/ListCommand.php(22): DigitalOceanV2\Api\App->getAll()
#5 /var/www/html/vendor/symfony/console/Command/InvokableCommand.php(52): Neurocracy\DigitalOcean\AppPlatform\Commands\ListCommand->__invoke()
#6 /var/www/html/vendor/symfony/console/Command/Command.php(315): Symfony\Component\Console\Command\InvokableCommand->__invoke()
#7 /var/www/html/vendor/symfony/console/Application.php(1092): Symfony\Component\Console\Command\Command->run()
#8 /var/www/html/vendor/symfony/console/Application.php(359): Symfony\Component\Console\Application->doRunCommand()
#9 /var/www/html/vendor/symfony/console/Application.php(194): Symfony\Component\Console\Application->doRun()
#10 /var/www/html/vendor/neurocracy/digitalocean-app-platform-commands/bin/do-app(13): Symfony\Component\Console\Application->run()
#11 /var/www/html/vendor/bin/do-app(119): include('...')
#12 {main}
  thrown in /var/www/html/vendor/toin0u/digitalocean-v2/src/Entity/AbstractEntity.php on line 62
Failed to run do-app apps:list: exit status 255

At first I thought it was something to do with using php-http/react-adapter:^4.0 instead of guzzlehttp/guzzle:^7.9.2 which is what you seem to test against, but given that you use HTTPlug, it shouldn't matter. Guzzle also produces the same error for me, so that seems to make that unlikely to be the cause.

Digging through the code, I figured the best place to handle this would be in AbstractEntity::build() because it seems to address similar errors others have encountered and may fix future errors due to the same cause of getting a \stdClass and attempting to set that to an array typed property. See #347, #348, and #350.

This is under PHP 8.3.25 and DDEV 1.24.8 so I don't know if the \stdClass thing is a quirk of combination of those and/or whatever other packages I'm using, but this allows the API to work correctly for me when I try to get a list of apps, for example.