mob spawners[skeleton] spawns even tho i have placed torches all over the spawner block and room 1.14

Please do not mark unreleased versions as affected.
You don't have access to them yet.

That's because you've only placed torches on the spawner. They work in a 9x9 radius and thus any unlit spaces in that radius are valid spawning spaces for skeletons. Basically, place torches in the corners of the room too.

This is definitely broken in iOS. Prior to this latest release you could stop a spawner from working if you placed a torch on the spawner itself. I have come across a new spawner in a new world on the latest release and regardless of how many torches you place in or around the spawner area (yes the whole radius) the mob still spawns therefore no way of switching it off...

A duplicate of MCPE-45335?

Nope a duplicate of MCPE-42427 known bug. You have to light the area to above 11 to get the spawner to stop.