Extend getPhysicalMemorySize to iOS (#8533)
Extend getPhysicalMemorySize to iOS (#8533)

Authored-by: Authored-by: Luke Iannini <08d899b60013a7bc91c1f92fc93e9738772d87e2@me.com>
Signed-off-by: Austin Seipp <7ea35d812706d9213868749011af1ed4fa2f6aa0@well-typed.com>

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