fix: handle query parameters in getFileName method

src/core/router/history/base.js

@@ -1,10 +1,10 @@
 import {
+  cleanPath,
   getPath,
   isAbsolutePath,
-  stringifyQuery,
-  cleanPath,
   replaceSlug,
   resolvePath,
+  stringifyQuery,
 } from '../util.js';
 import { noop } from '../../util/core.js';
 
@@ -32,11 +32,17 @@ export class History {
   }
 
   #getFileName(path, ext) {
-    return new RegExp(`\\.(${ext.replace(/^\./, '')}|html)$`, 'g').test(path)
-      ? path
-      : /\/$/g.test(path)
-        ? `${path}README${ext}`
-        : `${path}${ext}`;
+    const [basePath, query] = path.split("?");
+
+    const hasValidExt = new RegExp(`\\.(${ext.replace(/^\./, '')}|html)$`, 'g').test(basePath);
+
+    const updatedPath = hasValidExt
+      ? basePath
+      : /\/$/g.test(basePath)
+        ? `${basePath}README${ext}`
+        : `${basePath}${ext}`;
+
+    return query ? `${updatedPath}?${query}` : updatedPath;
   }
 
   getBasePath() {