[plugin-web-app] Fix field clearing using keyboard on MacOS

[valfirst]

Fixes #2589

[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

100.0% Coverage
0.0% Duplication

[codecov]

Codecov Report

Merging #3724 (2b13011) into master (4dc7ac3) will decrease coverage by 0.01%.
The diff coverage is 100.00%.

@@             Coverage Diff              @@
##             master    #3724      +/-   ##
============================================
- Coverage     96.97%   96.97%   -0.01%     
- Complexity     6122     6124       +2     
============================================
  Files           862      862              
  Lines         17513    17517       +4     
  Branches       1144     1145       +1     
============================================
+ Hits          16984    16987       +3     
- Misses          422      423       +1     
  Partials        107      107              

Impacted Files	Coverage Δ
...idus/selenium/manager/GenericWebDriverManager.java	93.75% <100.00%> (+0.13%)	⬆️
...n/java/org/vividus/ui/web/action/FieldActions.java	98.03% <100.00%> (+0.12%)	⬆️

... and 1 file with indirect coverage changes

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