Ensure it does not break with null values.

[haringsrob]

There's a case where the old value can be null, this simply checks/defaults to an empty array.

[what-the-diff]

PR Summary

• Modification of key-value template
  The template file in the path resources/views/tables/columns/key-value.blade.php has been updated.

• Improvement of Foreach Loop Condition
  An enhancement was made to the existing loop condition. Now, in case the expected value is not found, it will use an empty array as a fallback. This will prevent any potential errors due to a null value.

• Changes to Visual Elements
  The styling of certain visual elements has been updated. The span element has been given a new class to manage the whitespace. Additionally, the text and background colours have been modified to improve legibility and aesthetics.

• Retained twig variable
  The twig variable {{ $key }}, used for constructing dynamic content on the site, has remained unchanged.

[andreia]

@haringsrob Thank you! :)