fix: stop loading when input filter change has no effect on grid filters

When Ctrl+E clears all filters, the grid's clearAllFilters() removes
quick filters and stops loading. However, the input filter's debounced
clear arrives later, triggering startLoading('Filtering...') in
componentDidUpdate. Since the filters were already cleared,
applyInputFilters() finds no changes, never calls setState, and the
model update/stopLoading never fires - leaving the grid stuck.

Fix: make applyInputFilters() return whether filters actually changed.
If no change occurred, immediately call stopLoading() to cancel the
loading state that was optimistically started.

Author: mofojed

packages/iris-grid/src/IrisGrid.tsx

@@ -959,7 +959,13 @@ class IrisGrid extends Component<IrisGridProps, IrisGridState> {
         this.clearCrossColumSearch();
       }
       this.startLoading('Filtering...', { resetRanges: true });
-      this.applyInputFilters(changedInputFilters, replaceExistingFilters);
+      const isChanged = this.applyInputFilters(
+        changedInputFilters,
+        replaceExistingFilters
+      );
+      if (!isChanged) {
+        this.stopLoading();
+      }
     }
 
     if (isSelectingColumn !== prevProps.isSelectingColumn) {
@@ -1671,11 +1677,12 @@ class IrisGrid extends Component<IrisGridProps, IrisGridState> {
    * and clears any existing quickFilters or advancedFilters on that column
    * @param inputFilters Array of input filters to apply
    * @param replaceExisting If true, new filters will replace the existing ones, instead of merging
+   * @returns True if any filters were changed as a result of this operation
    */
   applyInputFilters(
     inputFilters: InputFilter[],
     replaceExisting = false
-  ): void {
+  ): boolean {
     const { model } = this.props;
     const { advancedFilters, quickFilters } = this.state;
     const newAdvancedFilters = replaceExisting
@@ -1704,6 +1711,7 @@ class IrisGrid extends Component<IrisGridProps, IrisGridState> {
         advancedFilters: newAdvancedFilters,
       });
     }
+    return isChanged;
   }
 
   /**