Block elements should be regular mosaics with consistent pseudo-pixels

[PhMajerus]

The block elements are designed to be mosaics, slicing a full block into pseudo-pixels and providing all possible patterns of those pixels on and off.
This means it should be a fixed grid and the positions of those pseudo-pixels should be stable. They should not extend outside of the block bounding box, and their grid should not change from one character to another from the same resolution set.

For example, the serie of quadrants ▘, ▝, ▀, ▖, ▌, ▞, ▛, ▗, ▚, ▐, ▜, ▄, ▙, ▟, and █ should be as close to a perfect 2×2 grid of pseudo-pixels as possible, and opposite patterns should be exactly the same as displaying the reverse video of its opposite.
On top of that, as can be seen with that set, it also reuses the half blocks, so the grid has to be consistent when moving to mosaics with more pseudo-pixels and fit together perfectly.

Currently, some block elements are using 1px overhang on the right that makes the grid irregular when combined horizontally:

It should be similar to this instead:

The set of block elements U+2580 to U+259F, U+1FB70 to U+1FB7B, and U+1FB82 to U+1FB8B should be adjusted to fit properly together and with higher density octants.