[Dark Mode] DataGridView Dark Mode default colors look inconsistent and visually unbalanced

[LeafShi1]

The default color scheme of DataGridView in Dark Mode exhibits significant inconsistencies and readability issues.

For example:

• Table backgrounds are typically a mix of dark gray and white.
• In dark themes, gridlines, row headers, and column headers lack a consistent visual appearance.
• Checkbox backgrounds are often dark blue/black, while text is black/white, resulting in insufficient contrast.
• Inconsistent with other WinForms controls (TreeView, ListView, PropertyGrid, etc.).

[LeafShi1]

Related issue:
#11893
#13780