Gender neutralize [[MediaWiki:Wikilove-anon-warning/en]] like all other strings

OPEN This issue is open, waiting for action

MediaWiki:Wikilove-anon-warning/en is the only sentence that uses the pronoun "he or she", while all other sentences use singular they ({{Template:Doc-singularthey}}) or rephrase the sentence. I propose to change the sentence to Note: This user is not registered and because of that may not notice this message. or something similar which avoids the pronoun.