fix condition of USE_TMP_HOME

Use tmp home if home can be changed.

fix https://github.com/ruby/actions/actions/runs/7164065566/job/19503611173

```
    > /home/runner/work/actions/actions/ruby-3.3.0-rc1/lib/irb/history.rb:62:in `initialize': Permission denied @ rb_sysopen - /home/runner/.irb_history (Errno::EACCES)
...
```

Author: ko1

test/support/console_test_case.rb

@@ -21,7 +21,7 @@ class ConsoleTestCase < TestCase
         PTY.spawn({ "HOME" => pwd }, ruby, '-e', 'puts ENV["HOME"]') do |r,|
           home_cannot_change = r.gets.chomp != pwd
         end
-        home_cannot_change
+        !home_cannot_change
       end
 
     class << self