fix: long version never show

Author: cuiweixie

clap_builder/src/output/help_template.rs

@@ -288,12 +288,18 @@ impl HelpTemplate<'_, '_> {
     }
 
     fn write_version(&mut self) {
-        let version = self
-            .cmd
-            .get_version()
-            .or_else(|| self.cmd.get_long_version());
+        let version = if self.use_long {
+            self.cmd
+                .get_long_version()
+                .or_else(|| self.cmd.get_version())
+        } else {
+            self.cmd
+                .get_version()
+                .or_else(|| self.cmd.get_long_version())
+        };
         if let Some(output) = version {
-            self.writer.push_string(wrap(output, self.term_w));
+            self.writer
+                .push_string(wrap(output.unwrap_or_default(), self.term_w));
         }
     }