The stub is here because CMake refuses to recognize libfido2;
we'll link it anyway.

--- Telegram/cmake/lib_fido2.cmake.orig	Tue Aug  4 13:15:18 2026
+++ Telegram/cmake/lib_fido2.cmake	Tue Aug  4 13:16:23 2026
@@ -9,9 +9,10 @@
 # On Windows it serves only systems without webauthn.dll (Win7/8/8.1,
 # Win10 < 1903); winhello.c is left out.
 
-add_library(lib_fido2 STATIC)
-init_target(lib_fido2 "(external)")
+add_library(lib_fido2 INTERFACE)
 add_library(tdesktop::lib_fido2 ALIAS lib_fido2)
+return()
+init_target(lib_fido2 "(external)")
 
 set(fido2_loc ${third_party_loc}/libfido2)
 set(fido2_src ${fido2_loc}/src)
