Fix handling of otherName in ConfirmNameConstraints #6117

Job	Run time
build library (--enable-intelasm --enable-sp-asm --enable-mlkem --enable-lms --enable-xmss --enab...	39s
build library (--disable-asm)	31s
build library (--disable-asm --enable-all-crypto --enable-mlkem --enable-lms --enable-xmss --enab...	57s
build library (--disable-asm --enable-mlkem --enable-lms --enable-xmss --enable-mldsa)	36s
build library (--enable-intelasm --enable-sp-asm)	31s
build library (--enable-intelasm --enable-sp-asm --enable-all-crypto --enable-mlkem --enable-lms ...	52s
	4m 6s

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