Reduce delay when searching entries in Auto-Type select dialog

[droidmonkey]

• Fix Auto-Type window filtering has a delay since 2.7.0 #7596

Testing strategy

Tested on Windows

Type of change

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

[pauschuu]

Looks good to me.
Built and tested on my system, works.

[hifi]

Found one issue, need to make the delay a shared const as well.

[codecov-commenter]

Codecov Report

Merging #7598 (2fee61a) into develop (7dc2d23) will increase coverage by 0.02%.
The diff coverage is 0.00%.

@@             Coverage Diff             @@
##           develop    #7598      +/-   ##
===========================================
+ Coverage    64.24%   64.27%   +0.02%     
===========================================
  Files          340      340              
  Lines        43465    43468       +3     
===========================================
+ Hits         27923    27935      +12     
+ Misses       15542    15533       -9     

Impacted Files	Coverage Δ
src/autotype/AutoTypeSelectDialog.cpp	0.00% <0.00%> (ø)
src/core/FileWatcher.cpp	86.75% <0.00%> (+1.20%)	⬆️
src/fdosecrets/dbus/DBusMgr.cpp	53.67% <0.00%> (+1.47%)	⬆️
...rc/fdosecrets/widgets/SettingsWidgetFdoSecrets.cpp	59.09% <0.00%> (+3.03%)	⬆️

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[hifi]

Ship it 👍