Change Grade Distribution Chart x-axis ticks stroke width to match Figma

[IsaDavRod]

The ticks should have an inside UT-gray stroke of 1px (at least that's how the Figma has it). Essentially, the current Extension build has ticks that are inconsistent with the tick and top thickness. If you look at the image, the vertical tick lines are thicker than the top horizontal line. This may be because two ticks are overlapping with each other. For the Figma, it helped to make the stroke "inside" rather than "center" or "outside" but idk if that's possible on your end.

_{Huly®: UTRP-330}