This test checks that fr tracks are properly sized whenever grid have intrinsic sizes.

XXX XXX
PASS
XXX XXX
PASS
XXX XXX
PASS
XXX XXX
PASS
XXX XXX
PASS
XXX XXXX XX X XX XXX
PASS
XXX XXXX XX X XX XXX
PASS
XXXX
XXXX XX XX
XXX XX X
XXXX XXX XXXX XXX XXXX
PASS