Fix Windows build for PySide6 (illegal file names)

Building the `.msi` on Windows was failing in the `candle.exe` step due
to some files in the PySide6 library being too long (PySide6/examples)
or having illegal character (`+`) in their file names
(PySide6/qml/QtQuick).

Skipping copying these files to the `.msi` fixes the issue. Skipping
`examples/` should be of no impact since they're just examples and
skipping `qml/QtQuick` shouldn't cause issues because we don't use QML.

Reverts commit `bbbf822` and adapts it from PySide2 to PySide6.

install/windows/build-wxs.py

@@ -22,6 +22,15 @@ def build_data(dirname, dir_prefix, id_, name):
             else:
                 id_prefix = id_
 
+            # Skip lib/PySide6/examples folder due to ilegal file names
+            if "\\build\\exe.win-amd64-3.10\\lib\\PySide6\\examples" in dirname:
+                continue
+
+            # Skip lib/PySide6/qml/QtQuick folder due to ilegal file names
+            # XXX Since we're not using Qml it should be no problem
+            if "\\build\\exe.win-amd64-3.10\\lib\\PySide6\\qml\\QtQuick" in dirname:
+                continue
+
             id_value = f"{id_prefix}{basename.capitalize().replace('-', '_')}"
             data["dirs"].append(
                 build_data(