Fix: Prevent empty markup when site title or description is empty #1068

Job	Run time
Test twentynineteen build script	13s
Test twentytwenty build script	24s
Test twentytwentyone build script	57s
twentytwentytwo empty file check	7s
twentytwentyfive empty file check	7s
twentytwentythree empty file check	7s
twentytwentyfour empty file check	7s
twentytwentyone empty file check	7s
twentynineteen empty file check	8s
twentyfifteen empty file check	6s
twentythirteen empty file check	7s
twentysixteen empty file check	9s
twentyseventeen empty file check	7s
twentytwenty empty file check	6s
twentytwelve empty file check	8s
twentyfourteen empty file check	7s
twentyeleven empty file check	8s
twentyten empty file check	7s
Create twentytwenty ZIP file	5s
Create twentytwentyfour ZIP file	6s
Create twentytwentytwo ZIP file	6s
Create twentytwentyone ZIP file	6s
Create twentytwentythree ZIP file	6s
Create twentynineteen ZIP file	6s
Create twentyseventeen ZIP file	6s
Create twentythirteen ZIP file	6s
Create twentytwelve ZIP file	6s
Create twentyeleven ZIP file	6s
Create twentytwentyfive ZIP file	6s
Create twentysixteen ZIP file	6s
Create twentyfifteen ZIP file	6s
Create twentyten ZIP file	5s
Create twentyfourteen ZIP file	6s
Slack Notifications	0s
Failed workflow tasks	0s
	4m 50s

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