Fix incorrect integer change detection when updating a model

[crankeye]

When a model update is triggered via save() method all fields with the 'data_type' property set to "int" will also get incorrectly marked for update. This means any integer fields will always be updated even if their values have not change.

Changes

• Fix incorrect integer change detection when updating a model. If the model data type is set to 'int' then use a soft comparison exactly like the is_changed() method by checking the data_type and using loose comparison instead of strict comparison.

Steps to Test

1. Create an example model with an integer data type

   'some_example_string' => [
           'default' => "",
           'null' => false
       ],
   'some_example_integer' => [
           'data_type' => 'int',
           'default' => 0,
           'null' => false
       ],

$myModel = My_Model::find(1);
$myModel->some_example_string = 'foo';
$myModel->save();

echo DB::last_query();

3. Validate some_example_integer is not being updated as part of the update query.