Window history records intermediate source buffer when using `display-buffer-same-window` from `embark-collect`

[jamescherti]

When executing an action from an *Embark Collect* buffer while forcing buffers to open in the same window, previous-buffer requires two presses to return to the collect buffer.

Steps to reproduce:

• Configure display-buffer-alist to force buffers into the same window.

  (dolist (regexp '("\\*Embark Collect" "\\*Embark Export"))
    (push `(,regexp (display-buffer-same-window)) display-buffer-alist))
  

• Open *Embark Collect* using consult-ripgrep and embark-collect for example.
• Execute a default action (like opening a file or buffer) from the collect buffer.
• Call previous-buffer in the newly opened target buffer.

Expected behavior: Calling previous-buffer once should return to the *Embark Collect* buffer.

Actual behavior: Calling previous-buffer once returns to the original source buffer (where the Embark command was initially invoked). Calling it a second time returns to the *Embark Collect* buffer.

This seems to happen because Embark temporarily switches to the source buffer to establish context before executing the action. Because display-buffer-alist forces the new buffer into the same window, Emacs records that intermediate source buffer in window-prev-buffers.