SCUMM/HE: Blue's s Reading Time Activities - Softlock when sliding down facing left

[DevanWolf]

Here is a video showcasing this bug: ​https://youtu.be/ExfgDX9pWD4

When Blue is facing left trying to slide down the slide, Blue literally warps downward sliding down into an inaccessible 3rd path making Blue get stuck there forever (as well as the cursor still being hidden), causing the game to softlock. It even happens the same on the original interpreter. Normally Blue is supposed to actually slide down to the next path as if Blue faces rightward, therefore a workaround has to be added in ScummVM. The only way out of this is by restarting the game (or cheat it out by using the room command in the debugger). This needs to be done at the "Help Orange Kitten and Yellow Kitten Build the Biggest Block Tower Ever" neighborhood maze which is the one with the slide on it.