Use setChangeCurrentOnDrag property to handle drag and drop between tabs

[daxcore]

drag and drop of entries between tabs doesn't work for wayland

the current implementation of DragTabBar is obsolete since Qt 5.4 with property changeCurrentOnDrag

.FIXES #7155

Testing strategy

Tested in self-compiled application. The feature still works now.

Type of change

• ✅ Bug fix
• ✅ Refactor

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

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Additional details and impacted files

@@            Coverage Diff             @@
##             develop    #7628   +/-   ##
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  Coverage           ?   64.31%           
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  Files              ?      339           
  Lines              ?    43423           
  Branches           ?        0           
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  Hits               ?    27926           
  Misses             ?    15497           
  Partials           ?        0           

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[mahaase]

Need help. What's about this "Windows 10 (KeePassXC) — TeamCity build failed" problem. I don't understand this.

[droidmonkey]

Just transient test failure, ignore it

[droidmonkey]

I need to test auto tab switching on windows and Mac with this change. Should be ok but I distrust Qt.