Support latest PXT with GC (#1798)

* Enable gc and basic compilation fixes

* Add missing GC stuff

* Set microbit-dal version

* Disable jacdac in servo

* UTF fixes

* TS build fixes

* Auto-generated files update

* We only seem to have that much

* Fix for new new compiler

* Account for uninitialized scheduler

* Intialize memory allocator

* bump references

* updated package

* Set image tag, requires https://github.com/Microsoft/pxt/pull/5262

* updated project summaries

* Fixing block tests

sim/state/radio.ts

@@ -79,6 +79,7 @@ namespace pxsim {
         raiseEvent(id: number, eventid: number) {
             Runtime.postMessage(<SimulatorEventBusMessage>{
                 type: "eventbus",
+                broadcast: true,
                 id,
                 eventid,
                 power: this.power,