[SHELL32][BROWSEUI] CopyMoveToMenu must initialize without a PIDL folder (#7047)

- IShellExtInit cannot rely on a folder PIDL being present
- Use common QueryContextMenu function for both menu item

[SHELL32][BROWSEUI] CopyMoveToMenu must initialize without a PIDL folder (#7047)

- IShellExtInit cannot rely on a folder PIDL being present
- Use common QueryContextMenu function for both menu items
- Allow copy to the same folder
- Disable toolbar buttons when the selection is not valid
- Minor DefView cache enhancement and bugfixes

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[SHELL32] Separate CCopyAsPathMenu implementation from CCopyMoveToMenu

[SHELL32] Copy as path shell extension (#6701)

* Added Copy as path menu extension

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Co-authored-by: Thamatip Chitpong <weedgamer131@gmail.com>

[SHELL32] Commonize CCopyToMenu and CMoveToMenu (#5873)

Reduce code. And correctly do the filename check.
CORE-18909