Minetest: Console and Pause menu disabled after respawning

[kilbith]

Cc: @ShadowNinja @est31

Regression caused by https://github.com/minetest/minetest/commit/effa24737d6997dc40508533635accca3ed099e9

Clear steps to reproduce systematically :

1. Die with the chat console opened (e.g. by falling).
2. After respawning, try re-opening your chat console.

There will be a screen-locking, just click to go back to the game. Then it will be impossible to open the chat console or the pause menu (forcing to quit Minetest by killing its process).

[est31]

Blocker label because before the thing worked fine, and the bug is very easy to reproduce.

[ShadowNinja]

Duplicate of #3831.

[est31]

Fixed by 8c951cae5bcfa715e227d47d122cc2de45d70a63