neovim: pass wrapper args only once (#257136)

    wrapperArgsStr = if lib.isString wrapperArgs then wrapperArgs else lib.escapeShellArgs wrapperArgs;

    # "--add-flags" (lib.escapeShellArgs flags)

    # wrapper args used both when generating the manifest and in the final neovim executable

    commonWrapperArgs = (lib.optionals (lib.isList wrapperArgs) wrapperArgs)

    commonWrapperArgs =

      # vim accepts a limited number of commands so we join them all

          ++ [

          [

            "--add-flags" ''--cmd "lua ${providerLuaRc}"''

            # (lib.intersperse "|" hostProviderViml)

          ] ++ lib.optionals (packpathDirs.myNeovimPackages.start != [] || packpathDirs.myNeovimPackages.opt != []) [