AOT compilation compatibility fix

[buu700]

Changed the speed dial and datatable components to drop the dependency on forwardRef, which had been breaking AOT compilation in my project.

(Note: my project doesn't use the datatable, just the speed dial, so my testing only covered the speed dial. I don't see why this change would cause a functionality regression in the data table when the speed dial continued to work as intended, but probably worth testing anyway before you merge this. It's also entirely possible that other AOT-breaking issues exist in the datatable component, as I've only confirmed that the speed dial AOT compiles successfully.)

Also, thanks a lot for taking the time to make this! smd-fab-speed-dial filled in the last remaining gap before I could finally start porting my project from a custom UpgradeModule-based Material1 wrapper to Material2.