Fix channel map loading spinners

frontend/src/app/lightning/nodes-channels-map/nodes-channels-map.component.scss

@@ -93,6 +93,9 @@
   top: 50%;
   left: calc(50% - 15px);
   z-index: 100;
+  @media (max-width: 767.98px) {
+    top: 550px;
+  }
 }
 .loading-spinner.widget {
   position: absolute;
@@ -103,4 +106,22 @@
   @media (max-width: 767.98px) {
     top: 250px;
   }
-}
+}
+.loading-spinner.nodepage {
+  position: absolute;
+  top: 200px;
+  z-index: 100;
+  width: 100%;
+  left: 0;
+}
+
+.loading-spinner.channelpage {
+  position: absolute;
+  top: 400px;
+  z-index: 100;
+  width: 100%;
+  left: 0;
+  @media (max-width: 767.98px) {
+    top: 450px;
+  }
+}

frontend/src/app/lightning/nodes-channels-map/nodes-channels-map.component.ts

@@ -21,6 +21,7 @@ export class NodesChannelsMap implements OnInit {
   @Input() publicKey: string | undefined;
   @Input() channel: any[] = [];
   @Input() fitContainer = false;
+  @Input() hasLocation = true;
   @Output() readyEvent = new EventEmitter();
 
   channelsObservable: Observable<any>; 
@@ -32,7 +33,7 @@ export class NodesChannelsMap implements OnInit {
   channelColor = '#466d9d';
   channelCurve = 0;
   nodeSize = 4;
-  isLoading = true;
+  isLoading = false;
 
   chartInstance = undefined;
   chartOptions: EChartsOption = {};
@@ -73,6 +74,11 @@ export class NodesChannelsMap implements OnInit {
     this.channelsObservable = this.activatedRoute.paramMap
      .pipe(
        switchMap((params: ParamMap) => {
+        this.isLoading = true;
+        if (this.style === 'channelpage' && this.channel.length === 0 || !this.hasLocation) {
+          this.isLoading = false;
+        }
+            
         return zip(
           this.assetsService.getWorldMapJson$,
           this.style !== 'channelpage' ? this.apiService.getChannelsGeo$(params.get('public_key') ?? undefined, this.style) : [''],