fix: fix RHVoice library installation after version update

[IldarMinaev]

Fix RHVoice installation after the RHVoice source update in cmake/rhvoice.cmake.

The install scripts still expected the old hardcoded 1.2.2 filenames. This caused make install / Arch makepkg to fail during the package step:

  -- Installing: /home/user/.cache/yay/dsnote-git/pkg/dsnote-git/usr/share/dsnote/espeakdata.tar.xz
  /usr/bin/strip: '/home/user/.cache/yay/dsnote-git/src/dsnote/build/external/lib/libRHVoice_core.so.1.2.2': No such file
  /usr/bin/strip: '/home/user/.cache/yay/dsnote-git/src/dsnote/build/external/lib/libRHVoice.so.1.2.2': No such file
  patchelf: getting info about '/home/user/.cache/yay/dsnote-git/src/dsnote/build/external/lib/libRHVoice_core.so.1.2.2': No such file or directory
  patchelf: getting info about '/home/user/.cache/yay/dsnote-git/src/dsnote/build/external/lib/libRHVoice_core.so.1.2.2': No such file or directory
  patchelf: getting info about '/home/user/.cache/yay/dsnote-git/src/dsnote/build/external/lib/libRHVoice.so.1.2.2': No such file or directory
  patchelf: getting info about '/home/user/.cache/yay/dsnote-git/src/dsnote/build/external/lib/libRHVoice.so.1.2.2': No such file or directory
  CMake Error at cmake_install.cmake:318 (file):
    file INSTALL cannot find
    "/home/user/.cache/yay/dsnote-git/src/dsnote/build/external/lib/libRHVoice_core.so.1.2.2":
    No such file or directory.


  make: *** [Makefile:100: install] Error 1
  ==> ERROR: A failure occurred in package().
      Aborting...
   -> error making: dsnote-git-exit status 4
   -> Failed to install the following packages. Manual intervention is required:
  dsnote-git - exit status 4

This PR:

• resolves versioned RHVoice shared libraries at install time instead of hardcoding the patch version
• applies the same fix to desktop and SFOS install scripts
• updates Flatpak RHVoice module commits to match cmake/rhvoice.cmake

Testing

• makepkg -f -e
• cmake --install src/dsnote/build --prefix /tmp/dsnote-install-check
• checked that RHVoice 1.2.2 is no longer hardcoded in tracked source files