Fix notebook inline values when using language provider (microsoft#254264)

It seems microsoft#240731 broke inline values from language providers by only updating decorations from the fallback code.

Co-authored-by: Michael Lively <[email protected]>

Author: martijnwalraven

src/vs/workbench/contrib/notebook/browser/contrib/notebookVariables/notebookInlineVariables.ts

@@ -244,7 +244,6 @@ export class NotebookInlineVariablesController extends Disposable implements INo
 				return;
 			}
 
-			const inlineDecorations: IModelDeltaDecoration[] = [];
 			const processedVars = new Set<string>();
 
 			// Get both function ranges and comment ranges
@@ -323,11 +322,11 @@ export class NotebookInlineVariablesController extends Disposable implements INo
 					}
 				}
 			});
+		}
 
-			if (inlineDecorations.length > 0) {
-				this.updateCellInlineDecorations(cell, inlineDecorations);
-				this.initCellContentListener(cell);
-			}
+		if (inlineDecorations.length > 0) {
+			this.updateCellInlineDecorations(cell, inlineDecorations);
+			this.initCellContentListener(cell);
 		}
 	}