tests: More slack for ASAN

Disable one and add a sleep to another

tests/checks/tmux-complete.fish

@@ -1,6 +1,8 @@
 #RUN: %fish %s
 #REQUIRES: command -v tmux
 #REQUIRES: uname -r | grep -qv Microsoft
+# disable on github actions because it's flakey
+#REQUIRES: test -z "$CI"
 
 isolated-tmux-start
 

tests/pexpects/eval-stack-overflow.py

@@ -19,6 +19,7 @@ expect_prompt()
 sendline("echo cat dog")
 expect_prompt("cat dog")
 
+sleep(0.5)
 sendline("eval (string replace dog tiger -- $history[1])")
 expect_prompt("cat tiger")