Fix #14946: `originalName` in dumpfile missing for local typedefs #1250

Job	Run time
build (ubsan, -DANALYZE_UNDEFINED=On, true, process, true)	9m 10s
build (asan, -DANALYZE_ADDRESS=On, true, process, false)	20m 3s
build (tsan, -DANALYZE_THREAD=On, false, thread, false, --executor=thread --error-exitcode=0)	5m 40s
	34m 53s

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