Only guess encoding for blob content
Related gitlab#33090 (closed) related slack thread (internal)
Git does no path name encoding conversions (ref: https://git-scm.com/docs/git-commit-tree#_discussion) so we should only guess encoding for the file content.
Note: this will only affect items indexed after this MR is merged. It will not fix existing items within the index
Edited by Terri Chu