Improve MailingOut's Notification Field: Add Scrollable Wrapper for Long Notifications

[MULTidll]

Description
This PR enhances the usability of the "notifications" field in the CRM mailing list admin(addresses and fixes the issue #213). If the notification (report) contains 20 or more lines, it is now displayed in a scrollable, fixed-height box . This prevents long error logs from cluttering the admin interface and improves readability for users/admins managing large mailings with many error messages.

[DjangoCRM]

@MULTidll Thanks!
The text scrolls well. But the scroll bar is not visible. Therefore, there is no sign that there is more text than is visible and it can be scrolled.
Another question - is it necessary to fix the field width unless this is a forced measure? The fact is that the column width is calculated by Django each time depending on the content.

[MULTidll]

The width of the scroll bar can be increased i will do that and about the field width it is not necessary but fixing the width to 500px helps control the layout and makes sure the content doesnt stretch too wide
and the content wraps perfectly within that given width

[DjangoCRM]

Unfortunately, it hasn't gotten any better.
Django calculates the column widths without assuming that one of them now has a fixed width.
On my screen filled with real field values, the Notification field extends beyond the frame. Therefore, its right side with the scrollbar is not visible.
Now there is a horizontal scroll bar at the bottom of the page.
It looks like we need to abandon the constant field width.

[MULTidll]

yeh got it, just now checked it and removed the fixed width