Add `ExpandInline` handler #7492

Job	Run time
check-rust	1m 44s
build test linux x86-64	1m 24s
check-website	12s
build test windows x86-64	5m 16s
scarb-metadata compatibility check	51s
doc tests	3m 13s
test ${{ matrix.platform.name }} ${{ matrix.partition }}/8	0s
	12m 40s

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