Correctly parse projects with spaces in zsh completion

This is the same as how the `_task_zshids` array is created.
See https://github.com/robbyrussell/oh-my-zsh/issues/8249

scripts/zsh/_task

@@ -24,7 +24,7 @@
 # https://www.opensource.org/licenses/mit-license.php
 #
 typeset -g _task_cmds _task_projects _task_tags _task_config _task_modifiers
-_task_projects=($(task _projects))
+_task_projects=(${(f)"$(task _projects)"})
 _task_tags=($(task _tags))
 _task_zshids=( ${(f)"$(task _zshids)"} )
 _task_config=($(task _config))