Code card rendering should use api name from 'blockAliasFor='

[ganicke]

Rendering of code cards uses the api name from the decompile info even when the attrs have blockAliasFor set. I'm thinking that if both the blocks and ```sig rendering use the alias name, the TS code cards should do the same?

The example here shows the api name with the _ while the alias name is set as onItemDropped.

//% blockId=events_onItemDropped
//% blockAliasFor="events.onItemDropped"
//% block="on $item dropped with $count"
//% draggableParameters="reporter"
//% group="Items"
//% weight=80 help=events/on-item-dropped
export function _onItemDropped(handler: (item: number, count: number) => void) {
    events.onItemDropped(handler);
}

RE: https://github.com/microsoft/pxt-minecraft/pull/2846#issuecomment-3222206254