`SceneManager.run` (and consequently `ScenePlugin.run`) was using an out-dated way of checking if a Scene was paused before trying to resume it, causing a Scene to be started again instead of resumed. It now uses the `Systems.isPaused` function instead. Fix #3931
`SceneManager.run` (and consequently `ScenePlugin.run`) was using an out-dated way of checking if a Scene was paused before trying to resume it, causing a Scene to be started again instead of resumed. It now uses the `Systems.isPaused` function instead. Fix #3931

TukekeSoft/phaser,mahill/phaser,spayton/phaser,mahill/phaser,photonstorm/phaser,photonstorm/phaser,BeanSeed/phaser,TukekeSoft/phaser,BeanSeed/phaser,TukekeSoft/phaser,spayton/phaser