Merge branch '415664-line-highlighter-fix' into 'master'

Fix range selection

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/127790



Merged-by: Phil Hughes <me@iamphill.com>
Approved-by: Stanislav Lashmanov <slashmanov@gitlab.com>
Approved-by: Phil Hughes <me@iamphill.com>
Co-authored-by: Nataliia Radina <nradina@gitlab.com>

app/assets/javascripts/blob/line_highlighter.js

@@ -153,7 +153,7 @@ LineHighlighter.prototype.highlightRange = function (range) {
     const results = [];
     const ref = range[0] <= range[1] ? range : range.reverse();
 
-    for (let lineNumber = ref[0]; lineNumber <= ref[1]; lineNumber += 1) {
+    for (let lineNumber = range[0]; lineNumber <= ref[1]; lineNumber += 1) {
       results.push(this.highlightLine(lineNumber));
     }