cubicweb-preview #12438364 PreviewController._build_local_filename may return a non-ascii string [resolved]

which makes it incompatible with eg. pyramid

prioritynormal
typebug
done in1.2.1
load left0.000
closed by#d4a86f743640 [controller] make PreviewController properly handle downloadable entities (closes #12438364)
patch[controller] make PreviewController properly handle downloadable entities (closes #12438364) [applied][test] add a test for filename with non-ascii chars [applied]