compatibility fix #1042

[SanariSan]

Fix of #1042 #1045
For compatibility with older versions of node ES2020 operator been replaced with explicit check.

this.selected =
        this.selected !== null && this.selected !== undefined ? this.selected : -1;

[codecov]

Codecov Report

Merging #1048 (2fb23d6) into master (c4a3c23) will increase coverage by 0.19%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #1048      +/-   ##
==========================================
+ Coverage   93.20%   93.40%   +0.19%     
==========================================
  Files          27       27              
  Lines        1163     1167       +4     
  Branches       25       25              
==========================================
+ Hits         1084     1090       +6     
+ Misses         79       77       -2     

Impacted Files	Coverage Δ
packages/inquirer/lib/prompts/base.js	92.45% <100.00%> (+0.29%)	⬆️
packages/inquirer/lib/prompts/checkbox.js	98.19% <100.00%> (ø)
packages/inquirer/lib/prompts/input.js	100.00% <100.00%> (+2.38%)	⬆️
packages/inquirer/lib/prompts/password.js	100.00% <100.00%> (ø)
packages/inquirer/lib/prompts/rawlist.js	98.87% <100.00%> (+0.01%)	⬆️
packages/inquirer/lib/ui/prompt.js	100.00% <100.00%> (ø)
packages/inquirer/lib/utils/screen-manager.js	92.85% <0.00%> (+1.42%)	⬆️

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[SBoudrias]

Thanks for handling quickly :)