Show commit author, not committer (#27856)

Release Notes:

- Fixed a bug where the git panel displayed a commit's committer in
place of its author.

crates/git_ui/src/commit_view.rs

@@ -375,7 +375,7 @@ fn format_commit(commit: &CommitDetails) -> String {
     writeln!(
         &mut result,
         "Author: {} <{}>",
-        commit.committer_name, commit.committer_email
+        commit.author_name, commit.author_email
     )
     .unwrap();
     writeln!(

crates/git_ui/src/git_panel.rs

@@ -3972,8 +3972,8 @@ impl GitPanelMessageTooltip {
 
                 let commit_details = crate::commit_tooltip::CommitDetails {
                     sha: details.sha.clone(),
-                    author_name: details.committer_name.clone(),
-                    author_email: details.committer_email.clone(),
+                    author_name: details.author_name.clone(),
+                    author_email: details.author_email.clone(),
                     commit_time: OffsetDateTime::from_unix_timestamp(details.commit_timestamp)?,
                     message: Some(ParsedCommitMessage {
                         message: details.message.clone(),