Fix translation keys filter

[fashxp]

fix queries like the following:

# Write your query or mutation here
{ getTranslationListing(first:10 domain:"admin" keys:"1960,1961") {
  edges { 
  node { 
  	key
    domain
    translations 
  }
  }
}
}

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

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