fix(blazor): Check if data and autoGenerate are set before gridAPI is init. (#16444)

Author: MayaKirova

projects/igniteui-angular/src/lib/grids/grid/grid.component.ts

@@ -415,7 +415,7 @@ export class IgxGridComponent extends IgxGridBaseDirective implements GridType,
             this.validation.updateAll(this._data);
         }
 
-        if (this.autoGenerate && this._data.length > 0 && this.shouldRecreateColumns(oldData, this._data)) {
+        if (this.autoGenerate && this._data.length > 0 && this.shouldRecreateColumns(oldData, this._data) && this.gridAPI.grid) {
             this.setupColumns();
         }
 

projects/igniteui-angular/src/lib/grids/hierarchical-grid/hierarchical-grid.component.ts

@@ -868,7 +868,7 @@ export class IgxHierarchicalGridComponent extends IgxHierarchicalGridBaseDirecti
         if (!this._init) {
             this.validation.updateAll(this._data);
         }
-        if (this.autoGenerate && this._data.length > 0 && this.shouldRecreateColumns(oldData, this._data)) {
+        if (this.autoGenerate && this._data.length > 0 && this.shouldRecreateColumns(oldData, this._data) && this.gridAPI.grid) {
             this.setupColumns();
             this.reflow();
         }