patch 8.2.2743: Vim9: function state stuck when compiling with ":silent!"

Problem:    Vim9: function state stuck when compiling with ":silent!".
Solution:   Check for uf_def_status to be UF_COMPILING.
diff --git a/src/globals.h b/src/globals.h
index 94ec54b..51a6946 100644
--- a/src/globals.h
+++ b/src/globals.h
@@ -230,6 +230,9 @@
 EXTERN int	did_emsg;		    // set by emsg() when the message
 					    // is displayed or thrown
 #ifdef FEAT_EVAL
+EXTERN int	did_emsg_silent INIT(= 0);  // incremented by emsg() when
+					    // emsg_silent was set and did_emsg
+					    // is not incremented
 EXTERN int	did_emsg_def;		    // set by emsg() when emsg_silent
 					    // is set before calling a function
 EXTERN int	did_emsg_cumul;		    // cumulative did_emsg, increased