test

Design Doc: Replace BlockSemantics with new flag (#13113) #7247

Job	Run time
Analyze and test code examples (Beta channel, beta, false)	7m 47s
Validate Firebase configuration	23s
Build site and check links	4m 26s
Check if code excerpts are up to date	24s
Analyze and test code examples (Stable channel, stable, true)	7m 2s
	20m 2s

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