pyfa error appears if arbitrary content is drag&dropped onto fitting window

[AaronOpfer]

Bug Report

I accidentally dragged a steam game from my steam library onto the fitting window.

Expected behavior:

Nothing should happen.

Actual behavior:

"Pyfa error"

pyfa v2.59.2
EVE Data Version: 2608648 (2024-06-13 08:52:55)

OS version: Linux-6.9.7+bpo-amd64-x86_64-with-glibc2.36
Python version: 3.11.9 (main, Apr  6 2024, 17:59:24) [GCC 11.4.0]
wxPython version: 4.2.1 (wxWidgets 3.2.2.1)
SQLAlchemy version: 1.4.50
Logbook version: 1.7.0.post0
Requests version: 2.31.0
Dateutil version: 2.8.2

####################

Traceback (most recent call last):
  File "/tmp/.mount_pyfa-vTo2xGI/opt/pyfa/gui/builtinViews/fittingView.py", line 130, in OnData
    data = dragged_data.split(':')
           ^^^^^^^^^^^^^^^^^^
AttributeError: 'NoneType' object has no attribute 'split'

Detailed steps to reproduce:

Drag and drop some content into fitting window.

Fits involved in EFT format (Edit > To Clipboard > EFT):

Not relevant

Release or development git branch? Please note the release version or commit hash:

v2.59.2

Operating system and version (eg: Windows 10, OS X 10.9, OS X 10.11, Ubuntu 16.10):

Debian 12

Other relevant information: