Check solaris 'smbios' is exists before running it

smbios could potentially be None here, possibly causing
the solaris 8/9 failures seen at #19282

Fixes #19282

lib/ansible/module_utils/facts.py

@@ -3591,6 +3591,8 @@ class SunOSVirtual(Virtual):
 
         else:
             smbios = self.module.get_bin_path('smbios')
+            if not smbios:
+                return
             rc, out, err = self.module.run_command(smbios)
             if rc == 0:
                 for line in out.splitlines():