patch 8.2.0706: Vim9: using assert_fails() causes function to finish

Problem:    Vim9: using assert_fails() causes function to finish.
Solution:   Check did_emsg instead of called_emsg.

src/testdir/test_vim9_disassemble.vim

@@ -17,6 +17,7 @@ def s:ScriptFuncLoad(arg: string)
   buffers
   echo arg
   echo local
+  echo &lines
   echo v:version
   echo s:scriptvar
   echo g:globalvar
@@ -42,6 +43,7 @@ def Test_disassemble_load()
         ' EXEC \+buffers.*' ..
         ' LOAD arg\[-1\].*' ..
         ' LOAD $0.*' ..
+        ' LOADOPT &lines.*' ..
         ' LOADV v:version.*' ..
         ' LOADS s:scriptvar from .*test_vim9_disassemble.vim.*' ..
         ' LOADG g:globalvar.*' ..

src/testdir/test_vim9_script.vim

@@ -1311,13 +1311,6 @@ def Test_vim9_comment()
       'catch /pat/# comment',
       'endtry',
       ], 'E488:')
-  CheckScriptFailure([
-      'vim9script',
-      'try',
-      '  throw "pat"',
-      'catch /pat/# comment',
-      'endtry',
-      ], 'E605:')
   CheckDefFailure([
       'try',
       'echo "yes"',

src/version.c

@@ -746,6 +746,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    706,
 /**/
     705,
 /**/

src/vim9execute.c

@@ -458,7 +458,7 @@ call_bfunc(int func_idx, int argcount, ectx_T *ectx)
 {
     typval_T	argvars[MAX_FUNC_ARGS];
     int		idx;
-    int		called_emsg_before = called_emsg;
+    int		did_emsg_before = did_emsg;
 
     if (call_prepare(argcount, argvars, ectx) == FAIL)
 	return FAIL;
@@ -470,7 +470,7 @@ call_bfunc(int func_idx, int argcount, ectx_T *ectx)
     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;
 }