fix: decimation plugin data not writeable after clean (#11045)

Author: johakr

src/plugins/plugin.decimation.js

@@ -158,7 +158,12 @@ function cleanDecimatedDataset(dataset) {
     const data = dataset._data;
     delete dataset._decimated;
     delete dataset._data;
-    Object.defineProperty(dataset, 'data', {value: data});
+    Object.defineProperty(dataset, 'data', {
+      configurable: true,
+      enumerable: true,
+      writable: true,
+      value: data,
+    });
   }
 }