Use Ctrl+Shift+C as the default FileSystem dock Copy Path shortcut

This closes #43396.

(cherry picked from commit 5b40f9fddc9cb6923f494997e683a621fd31fd56)

editor/filesystem_dock.cpp

@@ -2547,7 +2547,8 @@ FileSystemDock::FileSystemDock(EditorNode *p_editor) {
 	editor = p_editor;
 	path = "res://";
 
-	ED_SHORTCUT("filesystem_dock/copy_path", TTR("Copy Path"), KEY_MASK_CMD | KEY_C);
+	// `KEY_MASK_CMD | KEY_C` conflicts with other editor shortcuts.
+	ED_SHORTCUT("filesystem_dock/copy_path", TTR("Copy Path"), KEY_MASK_CMD | KEY_MASK_SHIFT | KEY_C);
 	ED_SHORTCUT("filesystem_dock/duplicate", TTR("Duplicate..."), KEY_MASK_CMD | KEY_D);
 	ED_SHORTCUT("filesystem_dock/delete", TTR("Delete"), KEY_DELETE);
 	ED_SHORTCUT("filesystem_dock/rename", TTR("Rename"));