Changed rtrim to str_replace inside "determineDiskName" method

[Perzonallica]

There was an issue with rtrim which removed also the last character from the $collectionName.

Example

I have multiple different disks defined inside config/filesystems.php.
I have a custom layout created App\Nova\Flexible\Layouts\GalleryLayout with the HasMediaLibrary trait. The name of the attribute there is articleImage which represents the name of the collection inside the determineDiskName --> whitecube/nova-flexible-content/src/FileAdder/FileAdder.php:34.

So the $collectionName together with suffix is something like: articleImage_cTWnzJ0PsPJXzxWJ.

After the rtrim result I've got: articleImag This caused that the determineDiskName method always returned the public disk, because such collection was not found.

The str_replace fixes this issue.

[wize-wiz]

@Perzonallica @voidgraphics I can confirm this. rtrim isn't meant to be replacing strings, but a list of characters.

[voidgraphics]

Looks good, thanks! Will try to publish a new release later today