fix: XDG_SESSION_TYPE is error when switch display manager environment

XDG_SESSION_TYPE is error when switch display manager environment

Log:

Author: dengbo11

misc/Xsession.d/00deepin-dde-env

@@ -7,7 +7,7 @@
 eval "$(
 	busctl --json=short --user get-property org.freedesktop.systemd1 /org/freedesktop/systemd1 org.freedesktop.systemd1.Manager Environment |
 		jq .data\[\] --raw-output |
-		grep -v "XDG_VTNR|XDG_SESSION_ID|XDG_SEAT" | # handle special character in environment
+		grep -v "XDG_VTNR\|XDG_SESSION_ID\|XDG_SEAT\|XDG_SESSION_TYPE" | # handle special character in environment
 		sed -r 's/\\/\\\\/' |
 		sed -r 's/'\''/\\'\''/' |
 		sed -r 's/"/\\"/' |