Media type filter and search error message in modal has changed

[paulwilde]

The error message when you filter by media type and get no results has changed from 3.9. This is the same when searching too.

Previously a properly aligned message would display with the ability to upload files. Now it just shows some generic text that is no longer aligned.

[ocean90]

In 29364:

Media Modal: Restore uploader view, when no items are found.

see #28963.

[ocean90]

Needs a decision about the strings and the button size. Have in mind, that the view is currently shared with the media grid.

[ocean90]

In [29364] data.message = this.options.message; was added, means "No items found." exists now always and .has-upload-message is set, which produces different margins, see ticket:28851:16. Have to check how this was set in 3.9.

[ocean90]

#29239 was marked as a duplicate.

[ocean90]

In 29532:

Media Modal: Restore to the previous filter and search error message.

fixes #28963.