Better handling of "Lock on Minimize" setting

[droidmonkey]

• Fix KeePassXC Won't Copy Password When "Lock Database After Minimizing Window" Is Checked. #1090 - delay locking databases after minimize to allow for clipboard use, Auto-Type use, and browser integration use.

• Fix minimize after unlocking vs. lock after minimizing -> impossible to keep database open #6757 - prevent setting both minimize on unlock and lock on minimize settings at the same time.

Testing strategy

Tested on Windows

Type of change

• ✅ Bug fix (non-breaking change that fixes an issue)

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 38.23529% with 21 lines in your changes missing coverage. Please review.

Project coverage is 64.42%. Comparing base (861fe2e) to head (aa70a66).
Report is 388 commits behind head on develop.

Files with missing lines	Patch %	Lines
src/gui/DatabaseTabWidget.cpp	20.00%	8 Missing ⚠️
src/gui/ApplicationSettingsWidget.cpp	40.00%	6 Missing ⚠️
src/gui/Clipboard.cpp	58.33%	5 Missing ⚠️
src/gui/MainWindow.cpp	0.00%	2 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #8202      +/-   ##
===========================================
- Coverage    64.45%   64.42%   -0.03%     
===========================================
  Files          339      339              
  Lines        43699    43722      +23     
===========================================
+ Hits         28162    28164       +2     
- Misses       15537    15558      +21     

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