x11/xterm: update to 389

Patch #389 - 2024/01/01
- interchange variables in subparameter parsing, fixing a bug where
  subparameters after the first parameter could be misidentified
  (patch by Adam Saponara).
- correct popping of icon/window titles in a case where only one was pushed
  from patch #385 changes.
- add XTQMODKEYS response in DECRQSS, as alternative for vim.
- correct DECCIR encoded information on character set size, handle a VT525
  quirk, and add DECST8C (Windows Terminal #14984).
- improve DECRQCRA (prompted by discussion with James Holderness, Windows
  Terminal #14974).
- add part of VT525 color controls:
    - DECAC, to update default foreground/background, respond to DECRQSS
    - DECATC, to respond with DECRQSS
- prevent Unicode non-characters from being printed
  (prompted by patch by Grady Martin).
- modify send_SGR() to avoid modifying colors 16 to 255 in printed output
  (patch by Grady Martin).
- minor cleanup of miscellaneous error-codes with ERROR_MISC.
- remove legacy CSI 53 for locator status, corrected in patch #294.
- modify DECRQUPSS and DECAUPSS feature to support VT5xx character sets
  (report by Thomas Wolff).
- improve configure script:
    - reduce configure-check compiler warnings
      (prompted by Florian Weimer, Redhat #2251945)
    - improve usage messages in configure script to make it clearer when an
      option value is optional.
- improve EWMH handling (report/analysis by Edward Rosten)
    - reset _NET_WM_STATE_HIDDEN flag from _NET_WM_STATE before mapping the
      window to deiconify.
    - cache X properties to reduce latency
      (adapted from patch by Edward Rosten).

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