[Refactor] Replace gettype with get_debug_type since php8.0 is minimal requirement now

[diimpp]

Describe the proposed solution

https://php.watch/versions/8.0/get_debug_type

Additional context
Cases:

SyliusResourceBundle/src/Component/legacy/src/Exception/UnexpectedTypeException.php

Line 26 in 1938ab8

is_object($value) ? get_class($value) : gettype($value),

SyliusResourceBundle/src/Bundle/Controller/ParametersParser.php

Line 93 in 1938ab8

gettype($variable),

SyliusResourceBundle/src/Bundle/Form/DataTransformer/CollectionToStringTransformer.php

Line 37 in 1938ab8

is_object($value) ? get_class($value) : gettype($value),

SyliusResourceBundle/src/Bundle/Form/DataTransformer/RecursiveTransformer.php

Line 85 in 1938ab8

is_object($value) ? get_class($value) : gettype($value),