Use more modern reference for input text

[snipe]

This just replaces Request::old() with the more modern old() for form input.

[what-the-diff]

PR Summary

• Updated input field attributes in various PHP files
  Several PHP files saw changes in their input field attributes. The "Request::old()" function, which retrieved an old input value from a user session, has been replaced with the simpler "old()" function.

• Replaced 'Request::old' with 'old' in blade.php files
  In more than 20 .blade.php view files, the function 'Request::old()' has been replaced with the more straightforward 'old()' function. The change streamlines the retrieval of previous input values and form data supplied by the user.

• Updated values for specific fields in numerous resources/views/settings files
  Certain settings files were modified to replace 'Request::old' with 'old' for various specific fields such as 'locale', 'email_domain', 'site_name' and others.

• Modification in statuslabel fields in edit.blade.php
  The 'Request::old' function was replaced with 'old' for the 'color', 'show_in_nav', and 'default_label' input fields making attribute data retrieval unified across the application.

• Added 'old()' method for certain form fields
  The 'old()' method was added to some hidden input field and select statements which aids in storing user input data in the user session, thus, preserving form data during page refreshes.

These changes make our codebase more consistent and easier to maintain, and they improve the user experience by preserving data that users have entered into forms, even if the page is refreshed.

[marcusmoore]

I didn't pull this down to test each file changed but looking at the diff to make sure Request::old was the only thing removed in each instance should cover it 👍🏾