fix download with different unit cell types

[minhsueh]

Bug fix for the report.

Download options –> the crystal viewer gives 6 download options, ALL of them are the conventional cell.

Root cause:

State(self.id(), "data"),

The original code uses the structure from the Docs, which is why the downloaded structures are the same every time.

Fix:

State(self.id("graph"), "data"),

Use the current generated graph data, which has been modified with the user's desired graph_generation_options.