[Notebook] Open Kernel Alias (Kusto) notebook with Kernel Alias (Kusto) as selected kernel (#14504)

* Open kernel alias notebook with kernel alias as selected kernel

* Add language info test

* fix test

Co-authored-by: Vasu Bhog <bhogvu@mail.uc.edu>

src/sql/workbench/contrib/notebook/browser/notebookActions.ts

@@ -337,6 +337,7 @@ export class KernelsDropdown extends SelectBox {
 					index = 0;
 				}
 				this.setOptions(kernels, index);
+				this.model.selectedKernelDisplayName = kernels[index];
 			}
 		} else if (this.model.clientSession?.isInErrorState) {
 			kernels.unshift(noKernelName);