docs(upstream): mark stevearc#707 as duplicate of #117 (#125)

* docs(upstream): mark stevearc#617 fixed via cherry-picked stevearc#618

Problem: Issue stevearc#617 (filetype-based icon detection) was still listed as
`open` in the upstream tracker despite being addressed by PR stevearc#618.

Solution: Update status to `fixed — cherry-picked (stevearc#618)`. Verified
with manual testing that `use_slow_filetype_detection` correctly detects
shebangs in extensionless files.

* docs(upstream): mark stevearc#675 as duplicate of #117

Problem: Issue stevearc#675 (move file into folder by renaming) was listed as
`open` despite being a duplicate of #117, the primary tracking issue
for move-by-rename (46 upvotes). Upstream already closed stevearc#675 as such.

Solution: Update status to `duplicate of #117`.

* docs(upstream): mark stevearc#707 as duplicate of #117

Problem: Issue stevearc#707 (move file/dir into new dir by renaming) was listed
as `open` despite being identical to #117. The associated draft PR stevearc#708
is already tracked separately in the PRs table.

Solution: Update status to `duplicate of #117`.

Author: barrettruth

doc/upstream.md

@@ -135,7 +135,7 @@ issues against this fork.
 | [#690](https://github.com/stevearc/oil.nvim/issues/690) | `OilFileIcon` highlight group                              | fixed                                                                                                       |
 | [#692](https://github.com/stevearc/oil.nvim/issues/692) | Keymap normalization                                       | cherry-picked ([#725](https://github.com/stevearc/oil.nvim/pull/725))                                       |
 | [#699](https://github.com/stevearc/oil.nvim/issues/699) | `select` blocks UI with slow FileType autocmd              | fixed ([#106](https://github.com/barrettruth/canola.nvim/pull/106))                                         |
-| [#707](https://github.com/stevearc/oil.nvim/issues/707) | Move file/dir into new dir by renaming                     | open                                                                                                        |
+| [#707](https://github.com/stevearc/oil.nvim/issues/707) | Move file/dir into new dir by renaming                     | duplicate of [#117](https://github.com/stevearc/oil.nvim/issues/117)                                        |
 | [#710](https://github.com/stevearc/oil.nvim/issues/710) | buftype empty on BufEnter                                  | fixed ([#10](https://github.com/barrettruth/canola.nvim/pull/10))                                           |
 | [#714](https://github.com/stevearc/oil.nvim/issues/714) | Support question                                           | not actionable — answered                                                                                   |
 | [#719](https://github.com/stevearc/oil.nvim/issues/719) | Neovim crash on node_modules                               | not actionable — libuv/neovim bug                                                                           |