[12.x] Modernize typecasting

[cosmastech]

In #57914, modernize_types_casting was set to true in pint, but it was never run against the codebase.

In order to facilitate this, I modified the app's pint.json file so it only included this rule:

Pint.json

{
    "preset": "empty",
    "rules": {
        "modernize_types_casting": true
    },
    "notPath": [
        "tests/Foundation/fixtures/bad-syntax-strategy.php"
    ]
}

and then ran vendor/bin/pint --parallel to apply just these changes.