Auto merge of #20374 - paulrouget:hittest, r=glennw
Auto merge of #20374 - paulrouget:hittest, r=glennw

Fix mouse click

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PR #20071 broke mouse click on hidpi screens.

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SimonSapin/servo,notriddle/servo,ConnorGBrewster/servo,jimberlage/servo,nnethercote/servo,sadmansk/servo,canaltinova/servo,DominoTree/servo,mbrubeck/servo,canaltinova/servo,SimonSapin/servo,upsuper/servo,jimberlage/servo,splav/servo,peterjoel/servo,upsuper/servo,saneyuki/servo,upsuper/servo,KiChjang/servo,mbrubeck/servo,paulrouget/servo,pyfisch/servo,emilio/servo,splav/servo,pyfisch/servo,paulrouget/servo,nnethercote/servo,saneyuki/servo,mbrubeck/servo,avadacatavra/servo,canaltinova/servo,anthgur/servo,peterjoel/servo,sadmansk/servo,notriddle/servo,larsbergstrom/servo,jimberlage/servo,cbrewster/servo,sadmansk/servo,avadacatavra/servo,paulrouget/servo,KiChjang/servo,jimberlage/servo,nnethercote/servo,saneyuki/servo,DominoTree/servo,ConnorGBrewster/servo,DominoTree/servo,cbrewster/servo,peterjoel/servo,szeged/servo,emilio/servo,szeged/servo,pyfisch/servo,jimberlage/servo,dati91/servo,szeged/servo,DominoTree/servo,cbrewster/servo,dati91/servo,sadmansk/servo,KiChjang/servo,dati91/servo,DominoTree/servo,splav/servo,canaltinova/servo,pyfisch/servo,upsuper/servo,canaltinova/servo,notriddle/servo,avadacatavra/servo,nnethercote/servo,dati91/servo,KiChjang/servo,emilio/servo,pyfisch/servo,larsbergstrom/servo,notriddle/servo,KiChjang/servo,ConnorGBrewster/servo,canaltinova/servo,KiChjang/servo,mattnenterprise/servo,notriddle/servo,emilio/servo,canaltinova/servo,nnethercote/servo,paulrouget/servo,saneyuki/servo,paulrouget/servo,szeged/servo,splav/servo,DominoTree/servo,pyfisch/servo,saneyuki/servo,ConnorGBrewster/servo,SimonSapin/servo,emilio/servo,dati91/servo,ConnorGBrewster/servo,anthgur/servo,KiChjang/servo,saneyuki/servo,peterjoel/servo,mattnenterprise/servo,mattnenterprise/servo,cbrewster/servo,anthgur/servo,mattnenterprise/servo,mbrubeck/servo,jimberlage/servo,ConnorGBrewster/servo,dati91/servo,DominoTree/servo,SimonSapin/servo,ConnorGBrewster/servo,anthgur/servo,mbrubeck/servo,anthgur/servo,SimonSapin/servo,szeged/servo,upsuper/servo,paulrouget/servo,upsuper/servo,sadmansk/servo,dati91/servo,mattnenterprise/servo,larsbergstrom/servo,avadacatavra/servo,splav/servo,splav/servo,szeged/servo,paulrouget/servo,pyfisch/servo,notriddle/servo,nnethercote/servo,KiChjang/servo,larsbergstrom/servo,canaltinova/servo,KiChjang/servo,jimberlage/servo,peterjoel/servo,saneyuki/servo,cbrewster/servo,notriddle/servo,SimonSapin/servo,anthgur/servo,avadacatavra/servo,larsbergstrom/servo,SimonSapin/servo,pyfisch/servo,mbrubeck/servo,larsbergstrom/servo,splav/servo,splav/servo,SimonSapin/servo,peterjoel/servo,peterjoel/servo,szeged/servo,DominoTree/servo,nnethercote/servo,mbrubeck/servo,cbrewster/servo,mattnenterprise/servo,pyfisch/servo,anthgur/servo,notriddle/servo,peterjoel/servo,sadmansk/servo,notriddle/servo,emilio/servo,mattnenterprise/servo,emilio/servo,szeged/servo,emilio/servo,avadacatavra/servo,KiChjang/servo,szeged/servo,jimberlage/servo,sadmansk/servo,cbrewster/servo,splav/servo,nnethercote/servo,paulrouget/servo,ConnorGBrewster/servo,larsbergstrom/servo,peterjoel/servo,avadacatavra/servo,szeged/servo,DominoTree/servo,paulrouget/servo,peterjoel/servo,notriddle/servo,pyfisch/servo,sadmansk/servo,nnethercote/servo,cbrewster/servo,saneyuki/servo,DominoTree/servo,saneyuki/servo,anthgur/servo,larsbergstrom/servo,jimberlage/servo,splav/servo,emilio/servo,avadacatavra/servo,upsuper/servo,mattnenterprise/servo,paulrouget/servo,larsbergstrom/servo,saneyuki/servo,upsuper/servo,larsbergstrom/servo,mbrubeck/servo,emilio/servo,dati91/servo,nnethercote/servo