BUG: fix syevr series segfault by explicitly specifying operator priority
BUG: fix syevr series segfault by explicitly specifying operator priority

With numpy 1.22.x f2py, dimension of isuppz in syevr is mistranslated.
Avoid this by explicitly specifying operator priority with parenthesis.

Fixes #16527

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