Pass axis information when measuring a child's size #1951

Job	Run time
Build Benchmarks (w/ yoga)	1m 16s
Documentation	19s
Clippy	46s
Build Benchmarks	1m 4s
Test Fixture Formatting	9s
Rustfmt	14s
Markdown Lint	5s
Test Suite [Features: alloc]	3m 59s
Test Suite [Features: Default]	1m 58s
Test Suite [Features: std (no grid)]	3m 47s
Test Suite [Features: Default + serde]	3m 31s
Test Suite [Features: flexbox + std]	3m 56s
Test Suite [Features: grid + std]	1m 55s
Test Suite [Features: grid + alloc]	3m 42s
Test Suite [Features: Default] (Rust 1.65)	5m 3s
Test Suite [Features: std (no grid or flexbox)]	1m 51s
Test Suite [Features: None]	3m 25s
	37m 0s

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