MatchMediaObservable does not auto-register standard breakpoints

[ThomasBurleson]

Breakpoints are registered in the BreakPointRegistry. But the MatchMediaObservable does not iterate that registry to configure the default listeners. This means only the "all" breakpoint is announced when using the observable.

[ThomasBurleson]

Currently the work-around requires a manual registration process like this:

   constructor( 
     @Inject(MatchMediaObservable) media$, 
     @Inject(BreakPointRegistry) breakpoints,   // Only injected due to bug #65
     @Inject(MatchMedia) mediaWatcher,          // Only injected due to bug #65
     ) {
       
      // This is a BUG described above
      // We must manually register all the mediaQueries registered in the BreakPointRegistry
      breakpoints.items.forEach( (bp:BreakPoint) => mediaWatcher.observe(bp.mediaQuery) );
     
      this._subscription = media$
        .subscribe((change:MediaChange) => {
          let isMobile = (change.mqAlias == 'xs') || (change.mqAlias == 'sm');          
          this.isOpen = !isMobile;
      });
   }

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