The ornamental design for a shavingbladecartridge, as shown and described.
FIG. 1 is a front perspective view of an ornamental design of a shaving blade cartridge according to the present invention;
FIG. 2 is a bottom view thereof;
FIG. 3 is a top view perspective view thereof;
FIG. 4 is a left side view thereof;
FIG. 5 is a right side view thereof;
FIG. 6 is a back view thereof; and,
FIG. 7 is a front view thereof.
The broken line disclosure of the razor handle illustrates the environment. The remaining broken lines illustrate portions of the shaving blade cartridge. None of the broken lines forms part of the claimed design.