Fix missing files in sonic-workspace 6.6.4 build

Comment out files/directories no longer present in upstream 6.6.4:
- startplasma-wayland binary
- phonon_platform plugin dir
- plasma5support plugin dir
- plasma5support data dir

Also escape macros in commented Requires to suppress RPM warning.

sonic-workspace.spec

@@ -172,7 +172,7 @@ Development files for sonic-workspace.
 
 %package        x11
 Summary:        SonicDE X11 session
-#Requires:       %{name}%{?_isa} = %{version}-%{release}
+#Requires:       %%{name}%%{?_isa} = %%{version}-%%{release}
 Requires:       xlibre-xserver-Xorg
 Conflicts:      plasma-workspace-x11
 
@@ -206,7 +206,7 @@ SonicDE X11 session.
 %{_bindir}/kfontview
 %{_bindir}/xembedsniproxy
 %{_bindir}/gmenudbusmenuproxy
-%{_bindir}/startplasma-wayland
+#%{_bindir}/startplasma-wayland
 %{_libdir}/lib*.so.*
 %{_libdir}/kconf_update_bin/
 %{_libexecdir}/ksmserver-logout-greeter
@@ -216,13 +216,13 @@ SonicDE X11 session.
 %{_libexecdir}/baloorunner
 %{_qt6_plugindir}/plasma/
 %{_qt6_plugindir}/kf6/
-%{_qt6_plugindir}/phonon_platform/
+#%{_qt6_plugindir}/phonon_platform/
-%{_qt6_plugindir}/plasma5support/
+#%{_qt6_plugindir}/plasma5support/
 %{_qt6_plugindir}/plasmacalendarplugins/
 %{_qt6_qmldir}/org/kde/
 %{_userunitdir}/plasma*
 %{_datadir}/plasma/
-%{_datadir}/plasma5support/
+#%{_datadir}/plasma5support/
 %{_datadir}/applications/*.desktop
 %{_datadir}/desktop-directories/
 %{_datadir}/config.kcfg/