bug#56864: qutebrowser: wrap-qt-process-path phase wrong type to string-append

[paren--- via Bug reports for GNU Guix]

This issue affects the following packages as well as qute:

  twinkle, lyx, nheko, quaternion, kcrash, likely many KDE packages
  (possibly kdenlive, kdevelop, and others), kguiaddons, psi, sonnet.

(Not a complete list, of course.)

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