fix: unable to correctly determine isAlwaysClosed and isAlwaysOpen

[jordyvanderhaegen]

Hi, this PR fixes an issue where the isAlwaysOpen and isAlwaysClosed methods were returning wrong results in cases where exceptions were defined.

Consider the following example, where isAlwaysClosed would return false:

$openingHours = OpeningHours::create([
    'Monday' => [],
    'Tuesday' => [],
    'Wednesday' => [],
    'Thursday' => [],
    'Friday' => [],
    'Saturday' => [],
    'Sunday' => [],
    'exceptions' => [
        '2023-12-24' => [],
    ],
]);

Or this example, where isAlwaysOpen would return false:

$openingHours = OpeningHours::create([
    'Monday' => ['00:00-24:00'],
    'Tuesday' => ['00:00-24:00'],
    'Wednesday' => ['00:00-24:00'],
    'Thursday' => ['00:00-24:00'],
    'Friday' => ['00:00-24:00'],
    'Saturday' => ['00:00-24:00'],
    'Sunday' => ['00:00-24:00'],
    'exceptions' => [
        '2023-12-24' => ['00:00-24:00'],
    ],
]);

• Introduced everyExceptions method for checking conditions on exceptions.
• Updated isAlwaysClosed and isAlwaysOpen methods to respect exceptions.
• Added tests for various scenarios of opening hours and exceptions.

[kylekatarnls]

Thank you 🙏

[kylekatarnls]

Released in 4.1.0