[12.x] Refactor unreleased data_has helper

[rodrigopedra]

PR #57570 introduced the data_has() helper to aid fixing the EnumerateValues::value() implementation.

The new helper works for the purposes of that PR, but is misaligned with other sibilings helpers, such as data_get().

For example, using the current implementation, all these assertions fail when then should pass:

$this->assertTrue(data_has($object, 'users.name.0'));
$this->assertTrue(data_has($array, '0.users.0.name'));
$this->assertTrue(data_has($dottedArray, ['users', 'first.name']));
$this->assertTrue(data_has($dottedArray, ['users', 'middle.name']));
$this->assertFalse(data_has($sameKeyMultiLevel, 'foo.name'));

This assertions were adapted from the data_get() helper tests.

The last one fails due to the current implementation using a while loop to search for a property segment existence.

This PR:

• Refactor the unreleased data_has() helper to behave more aligned with other sibling helpers.
  • Actually the logic is basically the same to traverse the data_get() helper\
  • The difference is that data_has() uses property_exists() and data_get() uses isset() to verify a object's property
• Add tests for the data_has() helper with assertions that would fail with the current implementation

[taylorotwell]

Thank you!

[decadence]

This function returns false for valid 0 key or I'm missing something? For example:

$array = [1, 2, 3];

data_has($array, "0"); // wrong false

[rodrigopedra]

@decadence sent PR #57586

Thanks!