Exporting with auto bounds doesn't account for outer stroke

[paulwrath1223]

When exporting an SVG with transperancy, the bounding box doesn't seem to include the outer stroke weight. So if you export a square with a stroke width of 8 px, the exported image will have the outer stroke cut off.

This is also the case in the dev deployment.

The exported svg: (notice how the borders are visibly cut off)

The project file (renamed to have .txt so github lets me upload it):
Spelling bee cell.graphite.txt

Changing the SVG viewbox, width, height, and remoxing the transformation to restore the boundaries to those present in the project (1000px^2 for me) fixed the issue completely.

[0HyperCube]

Duplicate of #2113.

[Keavon]

I'm actually going to make #2113 a duplicate of this, even though this is more recent, because it more clearly describes the problem.

[paulwrath1223]

Apologies for the duplicate, I tried looking for SVG errors, not realizing the issue applied to other formats too (as described by #2113) It's really not that big of a deal for me, but I figured you could decide if it's worth fixing.