apply_patch move to same path deletes the file #45310

Description

When apply_patch processes a Move directive where the destination path is the same as the source file path, it writes the new content then immediately removes the file — deleting what was just written. The file ends up missing instead of updated.

Steps to reproduce

1. Have a file same.txt with content old content
2. Apply a patch that updates the file and moves it to the same path:

*** Begin Patch
*** Update File: same.txt
*** Move to: same.txt
@@
-old content
+new content
*** End Patch

3. The file is deleted instead of containing new content

Root cause

In the case "move" branch, when movePath === filePath, the sequence is write(movePath, newContent) → remove(filePath), which removes the file just written. Since both paths resolve to the same absolute path, the remove undoes the write.