ssh remoting: Check nightly version correctly by comparing commit SHA (#19884)

This ensures that we detect if a new nightly version of the remote
server is available.
Previously we would always mark a version as matching if they had the
same semantic version.
However, for nightly versions we also need to check if they have the
same commit SHA.

Co-Authored-by: Thorsten <thorsten@zed.dev>

Release Notes:

- N/A

---------

Co-authored-by: Thorsten <thorsten@zed.dev>

crates/remote_server/src/main.rs

@@ -72,7 +72,12 @@ fn main() {
             }
         },
         Some(Commands::Version) => {
-            println!("{}", env!("ZED_PKG_VERSION"));
+            if let Some(build_sha) = option_env!("ZED_COMMIT_SHA") {
+                println!("{}", build_sha);
+            } else {
+                println!("{}", env!("ZED_PKG_VERSION"));
+            }
+
             std::process::exit(0);
         }
         None => {