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>

script/bundle-mac

@@ -63,6 +63,12 @@ if [[ $# -gt 0 ]]; then
     fi
 fi
 
+# Get release channel
+pushd crates/zed
+channel=$(<RELEASE_CHANNEL)
+export ZED_RELEASE_CHANNEL="${channel}"
+popd
+
 export ZED_BUNDLE=true
 export MACOSX_DEPLOYMENT_TARGET=10.15.7
 
@@ -90,10 +96,6 @@ else
 fi
 
 echo "Creating application bundle"
-pushd crates/zed
-channel=$(<RELEASE_CHANNEL)
-popd
-
 pushd crates/zed
 cp Cargo.toml Cargo.toml.backup
 sed \