Handle null in TypeScript optional #19637

Job	Run time
setup	8s
tests-linux	7m 28s
tests-windows	9m 25s
generate-main-branch-jar	1m 40s
cypress	1m 10s
generation (fullapp)	1m 37s
generation (oauth2app)	1m 37s
generation (mysqlapp)	1m 25s
generation (mariadbapp)	1m 34s
generation (mssqlapp)	1m 17s
generation (flywayapp)	1m 31s
generation (undertowapp)	1m 20s
generation (eurekaapp)	1m 19s
generation (consulapp)	1m 21s
generation (gatewayapp)	1m 28s
generation (mongodbapp)	1m 26s
generation (redisapp)	1m 35s
generation (cassandraapp)	1m 38s
generation (neo4japp)	1m 16s
generation (angularapp)	1m 12s
generation (reactapp)	1m 25s
generation (vueapp)	1m 24s
generation (kafkaapp)	1m 27s
generation (pulsarapp)	1m 18s
generation (reactiveapp)	1m 26s
generation (angularoauth2app)	1m 24s
generation (customjhlite)	1m 32s
generation (typescriptapp)	2m 4s
generation (thymeleafapp)	1m 19s
status-checks	1s
dependabot-auto-merge	0s
	54m 47s

Provide feedback