fix: dispose template data disposables in source column renderer (#20…

…2618)

src/vs/workbench/contrib/preferences/browser/keybindingsEditor.ts

@@ -1055,7 +1055,7 @@ class SourceColumnRenderer implements ITableRenderer<IKeybindingItemEntry, ISour
 	}
 
 	renderElement(keybindingItemEntry: IKeybindingItemEntry, index: number, templateData: ISourceColumnTemplateData, height: number | undefined): void {
-
+		templateData.disposables.clear();
 		if (isString(keybindingItemEntry.keybindingItem.source)) {
 			templateData.extensionContainer.classList.add('hide');
 			templateData.sourceLabel.element.classList.remove('hide');