Fix offline issues in Projects page with no/expired token

[wonder-sk]

1. incorrect "no workspace detected" message
2. endless busy wait on the home tab (unable to switch projects)
3. endless loop of requesting projects in the second tab

The hasAuthData() function is confusing - one may think it returns whether we are logged in, but in fact it only tells whether username+password have been set.

Before:

fix-offline-expired-token-before.mp4

After:

fix-offline-expired-token-after.mp4

[github-actions]

Pull Request Test Coverage Report for Build 8722278224

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 194 unchanged lines in 7 files lost coverage.
• Overall coverage decreased (-0.3%) to 60.008%

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Files with Coverage Reduction	New Missed Lines	%
input/app/projectsproxymodel.h	1	0.0%
input/app/projectsmodel.h	2	25.0%
input/core/project.h	2	55.56%
input/app/projectwizard.cpp	20	2.94%
input/app/projectsproxymodel.cpp	38	0.0%
input/app/projectsmodel.cpp	65	65.75%
input/app/mmstyle.h	66	2.02%

Totals
Change from base Build 8721422835:	-0.3%
Covered Lines:	7582
Relevant Lines:	12635

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💛 - Coveralls