DEP: remove `right` from interpolate.extend (#15822)
DEP: remove `right` from interpolate.extend (#15822)


vigna/scipy,rgommers/scipy,ilayn/scipy,WarrenWeckesser/scipy,andyfaff/scipy,rgommers/scipy,andyfaff/scipy,scipy/scipy,rgommers/scipy,Stefan-Endres/scipy,vigna/scipy,Stefan-Endres/scipy,anntzer/scipy,vigna/scipy,Stefan-Endres/scipy,scipy/scipy,endolith/scipy,anntzer/scipy,WarrenWeckesser/scipy,ilayn/scipy,Stefan-Endres/scipy,ilayn/scipy,endolith/scipy,mdhaber/scipy,mdhaber/scipy,scipy/scipy,ilayn/scipy,endolith/scipy,vigna/scipy,WarrenWeckesser/scipy,andyfaff/scipy,ilayn/scipy,perimosocordiae/scipy,anntzer/scipy,WarrenWeckesser/scipy,anntzer/scipy,andyfaff/scipy,rgommers/scipy,endolith/scipy,anntzer/scipy,vigna/scipy,WarrenWeckesser/scipy,rgommers/scipy,andyfaff/scipy,mdhaber/scipy,mdhaber/scipy,scipy/scipy,perimosocordiae/scipy,scipy/scipy,WarrenWeckesser/scipy,scipy/scipy,perimosocordiae/scipy,mdhaber/scipy,Stefan-Endres/scipy,mdhaber/scipy,perimosocordiae/scipy,andyfaff/scipy,perimosocordiae/scipy,endolith/scipy,perimosocordiae/scipy,Stefan-Endres/scipy,anntzer/scipy,endolith/scipy,ilayn/scipy