Fix b/242009481: Refine the battery usage chart timestamp label rule

Draw the first and the last labels. Then recursively draws axis labels between the start index and the end index. If the inner number can be exactly divided into 2 parts, check and draw the middle index label and then recursively draw the 2 parts. Otherwise, divide into 3 parts. Check and draw the middle two labels and then recursively draw the 3 parts. If there are any overlaps, skip drawing and go back to the uplevel of the recursion.

screenshots: https://drive.google.com/drive/folders/11AJ4Fz6xS76LGlbAy9WfvjZpffgFkMji?resourcekey=0-HBWCQa1oQW4e0UfvLzEXGQ&usp=sharing

Bug: 242009481
Fix: 242009481
Test: manual
Change-Id: Iaa9019feba7693638d5ae64bbbee7298eb74f749