web: Support align embed/object attribute (part of #4258) #27163

Job	Run time
Paths filter	7s
Build for browser tests	2m 4s
Test Node.js 22 / ubuntu-24.04	4m 12s
Test Node.js 22 / windows-latest	7m 19s
Test Node.js ${{ matrix.node_version }} / ${{ matrix.os }}	0s
Test Node.js 23 / ubuntu-24.04	3m 58s
Test Node.js 23 / windows-latest	6m 47s
Test in ${{ matrix.browser }}	0s
Test in chrome	1m 49s
Test in firefox	2m 49s
Test in edge	2m 11s
	31m 16s

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