patch 8.2.1916: Vim9: function call is aborted even when "silent!" is used

Problem:    Vim9: function call is aborted even when "silent!" is used.
Solution:   Use did_emsg instead of called_emsg. (closes #7213)
diff --git a/src/vim9execute.c b/src/vim9execute.c
index 341e5d0..c428a3d 100644
--- a/src/vim9execute.c
+++ b/src/vim9execute.c
@@ -550,7 +550,7 @@
 {
     typval_T	argvars[MAX_FUNC_ARGS];
     int		idx;
-    int		called_emsg_before = called_emsg;
+    int		did_emsg_before = did_emsg;
     ectx_T	*prev_ectx = current_ectx;
 
     if (call_prepare(argcount, argvars, ectx) == FAIL)
@@ -566,7 +566,7 @@
     for (idx = 0; idx < argcount; ++idx)
 	clear_tv(&argvars[idx]);
 
-    if (called_emsg != called_emsg_before)
+    if (did_emsg != did_emsg_before)
 	return FAIL;
     return OK;
 }
@@ -834,6 +834,7 @@
     msglist_T	*private_msg_list = NULL;
     cmdmod_T	save_cmdmod;
     int		restore_cmdmod = FALSE;
+    int		trylevel_at_start = trylevel;
 
 // Get pointer to item in the stack.
 #define STACK_TV(idx) (((typval_T *)ectx.ec_stack.ga_data) + idx)
@@ -2866,7 +2867,8 @@
 	continue;
 
 on_error:
-	if (trylevel == 0)
+	// If we are not inside a try-catch started here, abort execution.
+	if (trylevel <= trylevel_at_start)
 	    goto failed;
     }