LCSG(key) not implemented in VIAL?

[resuna]

I attempted to set 4 to LCSG(KC_4) and got the message that it was an invalid keycode.

But according to https://docs.qmk.fm/keycodes "LCSG(kc) Hold Left Control, Left Shift and Left GUI and press kc"

[anantoghosh]

RCAG is also missing

[anantoghosh]

After looking a bit into it I see that on the GUI the missing keys are:
LCSG
LSAG
and their _T counterpart

for right mods, every combination except RCG, RCG_T and RCAG_T are missing i.e.
RCS
RCA
RSA
RSG
RAG
RCSG
RCAG
RSAG
and their _T counterpart

https://github.com/vial-kb/vial-gui/blob/main/src/main/python/any_keycode.py is missing
LCS(kc)
LCSG(kc)
RCA(kc)
RAG(kc)
RCSG(kc)
RCAG(kc)
KC_MEH
KC_HYPR

LCS_T(kc)
LSG_T(kc) alias available
LCSG_T(kc)
LSAG_T(kc)
RSG_T(kc)
RCAG_T(kc)