chore: should be able to copy commit text from history viewer commit detail pane

Author: abose

src/extensions/default/Git/styles/git-styles.less

@@ -613,6 +613,7 @@
         }
         .commitBody {
             padding: 0 30px;
+            user-select: text;
         }
         .commit-files {
             padding: 0 20px;