patch 8.2.2818: no jump added  when opening terminal in current window

Problem:    No jump added to jumplist when opening terminal in current window.
Solution:   Call setpcmark(). (closes #8158)
diff --git a/src/terminal.c b/src/terminal.c
index 6f07055..ce9f64b 100644
--- a/src/terminal.c
+++ b/src/terminal.c
@@ -473,6 +473,7 @@
     ga_init2(&term->tl_scrollback_postponed, sizeof(sb_line_T), 300);
     ga_init2(&term->tl_osc_buf, sizeof(char), 300);
 
+    setpcmark();
     CLEAR_FIELD(split_ea);
     if (opt->jo_curwin)
     {