\CRM\CivixBundle\Builder\PhpData::save set strict flag on in_array

[semseysandor]

PhpData::save generates strange output from the input data on PHP<8.0.0.
For example during convert-entity command:

If the legacy xml entity files contains <import> or <export> elements in a <field> element

<field>
...
  <import>true</import>
  <export>true</export>
...
</field>

will be converted in the generated .entityType.php to

'usage' => [
  constant(fn() => 'import'),
  'export',
  'duplicate_matching',
],

which emits a PHP WARNING when evaluated.

This is due to loose type checking in in_array() in PHP prior to 8.0.0

This PR adds strict type checking to in_array().

[totten]

Nice catch @semseysandor. I tried it out -- and that new output definitely makes more sense!