Fix provenance of first cell's inline collapsed border
Fix provenance of first cell's inline collapsed border

This fixes the inline-direction part of #14834.

avadacatavra/servo,sadmansk/servo,emilio/servo,thiagopnts/servo,anthgur/servo,mbrubeck/servo,dati91/servo,larsbergstrom/servo,DominoTree/servo,eddyb/servo,CJ8664/servo,fiji-flo/servo,upsuper/servo,cbrewster/servo,mattnenterprise/servo,SimonSapin/servo,avadacatavra/servo,eddyb/servo,anthgur/servo,sadmansk/servo,fiji-flo/servo,SimonSapin/servo,paulrouget/servo,fiji-flo/servo,canaltinova/servo,jimberlage/servo,larsbergstrom/servo,jimberlage/servo,dati91/servo,eddyb/servo,rnestler/servo,paulrouget/servo,emilio/servo,avadacatavra/servo,avadacatavra/servo,pyfisch/servo,saneyuki/servo,paulrouget/servo,DominoTree/servo,canaltinova/servo,upsuper/servo,ConnorGBrewster/servo,ConnorGBrewster/servo,notriddle/servo,SimonSapin/servo,peterjoel/servo,szeged/servo,saneyuki/servo,CJ8664/servo,mbrubeck/servo,pyfisch/servo,mbrubeck/servo,notriddle/servo,avadacatavra/servo,nnethercote/servo,canaltinova/servo,dsandeephegde/servo,mattnenterprise/servo,saneyuki/servo,larsbergstrom/servo,eddyb/servo,KiChjang/servo,canaltinova/servo,thiagopnts/servo,dsandeephegde/servo,upsuper/servo,avadacatavra/servo,notriddle/servo,peterjoel/servo,ConnorGBrewster/servo,szeged/servo,szeged/servo,upsuper/servo,ConnorGBrewster/servo,eddyb/servo,notriddle/servo,dsandeephegde/servo,DominoTree/servo,SimonSapin/servo,emilio/servo,canaltinova/servo,cbrewster/servo,thiagopnts/servo,saneyuki/servo,saneyuki/servo,mattnenterprise/servo,KiChjang/servo,szeged/servo,saneyuki/servo,splav/servo,anthgur/servo,splav/servo,fiji-flo/servo,dati91/servo,rnestler/servo,thiagopnts/servo,szeged/servo,KiChjang/servo,pyfisch/servo,rnestler/servo,CJ8664/servo,mattnenterprise/servo,KiChjang/servo,emilio/servo,mbrubeck/servo,KiChjang/servo,dati91/servo,mattnenterprise/servo,notriddle/servo,anthgur/servo,splav/servo,mbrubeck/servo,pyfisch/servo,thiagopnts/servo,szeged/servo,fiji-flo/servo,saneyuki/servo,jimberlage/servo,mbrubeck/servo,thiagopnts/servo,pyfisch/servo,KiChjang/servo,notriddle/servo,saneyuki/servo,ConnorGBrewster/servo,fiji-flo/servo,notriddle/servo,dati91/servo,sadmansk/servo,szeged/servo,cbrewster/servo,rnestler/servo,larsbergstrom/servo,KiChjang/servo,sadmansk/servo,dsandeephegde/servo,nnethercote/servo,cbrewster/servo,mbrubeck/servo,DominoTree/servo,notriddle/servo,SimonSapin/servo,DominoTree/servo,thiagopnts/servo,eddyb/servo,canaltinova/servo,peterjoel/servo,anthgur/servo,CJ8664/servo,larsbergstrom/servo,DominoTree/servo,nnethercote/servo,mbrubeck/servo,notriddle/servo,avadacatavra/servo,dsandeephegde/servo,canaltinova/servo,sadmansk/servo,cbrewster/servo,larsbergstrom/servo,pyfisch/servo,splav/servo,KiChjang/servo,jimberlage/servo,sadmansk/servo,emilio/servo,splav/servo,emilio/servo,mattnenterprise/servo,szeged/servo,peterjoel/servo,upsuper/servo,paulrouget/servo,paulrouget/servo,CJ8664/servo,larsbergstrom/servo,szeged/servo,jimberlage/servo,splav/servo,dsandeephegde/servo,szeged/servo,pyfisch/servo,dsandeephegde/servo,pyfisch/servo,larsbergstrom/servo,thiagopnts/servo,ConnorGBrewster/servo,upsuper/servo,splav/servo,peterjoel/servo,cbrewster/servo,sadmansk/servo,nnethercote/servo,paulrouget/servo,nnethercote/servo,jimberlage/servo,nnethercote/servo,cbrewster/servo,rnestler/servo,CJ8664/servo,fiji-flo/servo,canaltinova/servo,upsuper/servo,CJ8664/servo,eddyb/servo,jimberlage/servo,upsuper/servo,KiChjang/servo,jimberlage/servo,mattnenterprise/servo,KiChjang/servo,larsbergstrom/servo,splav/servo,anthgur/servo,nnethercote/servo,anthgur/servo,fiji-flo/servo,SimonSapin/servo,rnestler/servo,larsbergstrom/servo,eddyb/servo,peterjoel/servo,cbrewster/servo,SimonSapin/servo,peterjoel/servo,dati91/servo,ConnorGBrewster/servo,notriddle/servo,emilio/servo,DominoTree/servo,nnethercote/servo,dati91/servo,saneyuki/servo,paulrouget/servo,SimonSapin/servo,ConnorGBrewster/servo,anthgur/servo,paulrouget/servo,CJ8664/servo,mattnenterprise/servo,avadacatavra/servo,DominoTree/servo,rnestler/servo,splav/servo,splav/servo,dati91/servo,pyfisch/servo,nnethercote/servo,emilio/servo,peterjoel/servo,rnestler/servo,emilio/servo,sadmansk/servo,nnethercote/servo,jimberlage/servo,pyfisch/servo,peterjoel/servo,DominoTree/servo,paulrouget/servo,peterjoel/servo,saneyuki/servo,emilio/servo,paulrouget/servo,DominoTree/servo,dsandeephegde/servo