ALT +Q Invalidating: Improving TerrainMagic Workflow by 10X

Now you don't need to click Invalidate button in TerrainMagic. Instead, you can hit the `ALT + Q` key combo. * Get TerrainMagic: https://www.unrealengine.com/marketplace/en-US/product/terrainmagic-supercharging-landscape-creation * Join Our Discord: https://discord.gg/DK9cMn9eFV