fix: Fixed a regression that was introduced with changed nil handling (#7938)

Signed-off-by: Matt Butcher <matt.butcher@microsoft.com>

pkg/chartutil/create.go

@@ -113,7 +113,7 @@ serviceAccount:
   annotations: {}
   # The name of the service account to use.
   # If not set and create is true, a name is generated using the fullname template
-  name:
+  name: ""
 
 podAnnotations: {}