patch 8.2.1613: Vim9: cannot pass "true" to prop_type_add()

Problem:    Vim9: cannot pass "true" to prop_type_add().
Solution:   Use tv_get_bool(). (closes #6850)

Author: brammool

src/testdir/test_textprop.vim

@@ -321,6 +321,17 @@ func Test_prop_remove()
   bwipe!
 endfunc
 
+def Test_prop_add_vim9()
+  prop_type_add('comment', #{
+      highlight: 'Directory',
+      priority: 123,
+      start_incl: true,
+      end_incl: true,
+      combine: false,
+    })
+  prop_type_delete('comment')
+enddef
+
 def Test_prop_remove_vim9()
   new
   call AddPropTypes()

src/textprop.c

@@ -1007,7 +1007,7 @@ prop_type_set(typval_T *argvars, int add)
 	di = dict_find(dict, (char_u *)"combine", -1);
 	if (di != NULL)
 	{
-	    if (tv_get_number(&di->di_tv))
+	    if (tv_get_bool(&di->di_tv))
 		prop->pt_flags |= PT_FLAG_COMBINE;
 	    else
 		prop->pt_flags &= ~PT_FLAG_COMBINE;
@@ -1020,7 +1020,7 @@ prop_type_set(typval_T *argvars, int add)
 	di = dict_find(dict, (char_u *)"start_incl", -1);
 	if (di != NULL)
 	{
-	    if (tv_get_number(&di->di_tv))
+	    if (tv_get_bool(&di->di_tv))
 		prop->pt_flags |= PT_FLAG_INS_START_INCL;
 	    else
 		prop->pt_flags &= ~PT_FLAG_INS_START_INCL;
@@ -1029,7 +1029,7 @@ prop_type_set(typval_T *argvars, int add)
 	di = dict_find(dict, (char_u *)"end_incl", -1);
 	if (di != NULL)
 	{
-	    if (tv_get_number(&di->di_tv))
+	    if (tv_get_bool(&di->di_tv))
 		prop->pt_flags |= PT_FLAG_INS_END_INCL;
 	    else
 		prop->pt_flags &= ~PT_FLAG_INS_END_INCL;

src/version.c

@@ -754,6 +754,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1613,
 /**/
     1612,
 /**/