fix: use HumanSize for image list to avoid scientific notation

The Size() method in the image formatter used HumanSizeWithPrecision
with precision=3, which causes fmt %g to emit scientific notation
(1e+03MB) when a size rounds to exactly 1000 in its current unit
(e.g. an image of ~999.5 MB).

Switch to HumanSize() which uses precision=4 (the standard across the
rest of the CLI) and avoids this edge case while still producing
compact human-readable output.

Fixes #3091

Signed-off-by: Aaron Mark <64331623+amarkdotdev@users.noreply.github.com>

Author: amarkdotdev

cli/command/formatter/image.go

@@ -246,7 +246,7 @@ func (c *imageContext) CreatedAt() string {
 }
 
 func (c *imageContext) Size() string {
-	return units.HumanSizeWithPrecision(float64(c.i.Size), 3)
+	return units.HumanSize(float64(c.i.Size))
 }
 
 func (c *imageContext) Containers() string {