fix: should stop measure when pressing enter key with empty result

[kerm1it]

#26097

@afc163

[codecov]

Codecov Report

Merging #30 into master will increase coverage by 0.01%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master      #30      +/-   ##
==========================================
+ Coverage   99.08%   99.10%   +0.01%     
==========================================
  Files           6        6              
  Lines         219      223       +4     
  Branches       48       49       +1     
==========================================
+ Hits          217      221       +4     
  Misses          2        2              

Impacted Files	Coverage Δ
src/Mentions.tsx	99.25% <100.00%> (+0.02%)	⬆️

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