fix missing const qualifier in cwiseEqual
fix missing const qualifier in cwiseEqual

Zefz/eigen,ROCmSoftwarePlatform/hipeigen,pasuka/eigen,ritsu1228/eigen,ritsu1228/eigen,pasuka/eigen,ROCmSoftwarePlatform/hipeigen,ritsu1228/eigen,TSC21/Eigen,pasuka/eigen,Zefz/eigen,ritsu1228/eigen,Zefz/eigen,pasuka/eigen,ROCmSoftwarePlatform/hipeigen,Zefz/eigen,ritsu1228/eigen,toastedcrumpets/eigen,toastedcrumpets/eigen,TSC21/Eigen,pasuka/eigen,ROCmSoftwarePlatform/hipeigen,toastedcrumpets/eigen,toastedcrumpets/eigen,TSC21/Eigen,TSC21/Eigen