Fix download button

[wonder-sk]

Fixes #3206

Do not show download button while download is in progress... Debug build would crash on assert anyway. This fixes the problem (1) and it should not be possible to get problems (2) and (3) anymore

https://github.com/MerginMaps/mobile/assets/193367/cc6042ec-732e-46e4-92db-1c4a8087831e

[github-actions[bot]]

Pull Request Test Coverage Report for Build 8645655393

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 1 unchanged line in 1 file lost coverage.
• Overall coverage increased (+0.008%) to 60.065%

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Files with Coverage Reduction	New Missed Lines	%
input/app/projectsmodel.cpp	1	65.75%
<!--	Total:	1		-->

Totals
Change from base Build 8628227245:	0.008%
Covered Lines:	7582
Relevant Lines:	12623

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💛 - Coveralls

[PeterPetrik]

invisible button is not possible to press, right? right? right? :)