GT Corporate rendered incorrectly without hinting

Linked issue: https://issues.chromium.org/issues/444048015

Since Chrome 140 and https://github.com/googlefonts/fontations/commit/d6b4719403925e210d82edee9e1002324f9e5754 , [GT Corporate](https://www.grillitype.com/about) is not getting rendered properly;

## Expected render

## Actual render

It looks correct though when `text-rendering: geometricPrecision;` is added

# svg renders
## Render code
```rust
// converted with ./woff2_decompress
let path = Path::new("GT-Corporate-Web.otf");
let font_bytes = std::fs::read(path).unwrap();
let font = FontRef::new(&font_bytes).expect("failed to read font data");

// First, grab the set of outline glyphs from the font.
let outlines = font.outline_glyphs();

// Find the glyph identifier for our character.
let glyph_id = font.charmap().map('r').unwrap();

// Grab the outline glyph.
let glyph = outlines.get(glyph_id).unwrap();

// Now, construct an instance of our pen.
let mut svg_path = SvgPath::default();

glyph
.draw(
DrawSettings::unhinted(Size::new(16.0), LocationRef::default()),
&mut svg_path,
)
.unwrap();

std::fs::write(
"out.svg",
format!(
r##""##,
svg_path.0
),
)
.unwrap();
```
## before https://github.com/googlefonts/fontations/commit/d6b4719403925e210d82edee9e1002324f9e5754

## after https://github.com/googlefonts/fontations/commit/d6b4719403925e210d82edee9e1002324f9e5754

# Probable cause of the regression
```rust
let font_bytes = std::fs::read(Path::new("GT-Corporate-Web.otf")).unwrap();
let font = FontRef::new(&font_bytes).expect("failed to read font data");
let cff = font.cff().expect("missing cff table");

let private_offset = entries(cff.top_dicts().get(0).unwrap(), None)
.find_map(|x| match x {
Ok(Entry::PrivateDictRange(r)) => Some(r),
_ => None,
})
.unwrap();
let private_dict = cff.offset_data().slice(private_offset).unwrap();

let blue = entries(private_dict.as_bytes(), None)
.find_map(|x| match x {
Ok(Entry::BlueScale(r)) => Some(r),
_ => None,
})
.unwrap();

// before d6b47194: BLUE SCALE: 0.029998779296875
// after d6b47194: BLUE SCALE: 0
println!("BLUE SCALE: {blue}");
```

[OTF font file](https://issues.chromium.org/action/issues/444048015/attachments/69199966?download=true)

Start by reviewing the linked Chromium issue and the fontations commit d6b4719403925e210d82edee9e1002324f9e5754, then reproduce the SVG rendering with the Rust snippet and GT-Corporate-Web.otf. Trace how the CFF Blue Scale value changes before and after the commit; done means the font renders consistently without requiring the reported CSS hint.

Written by the indexing model from the issue text.