Add test in UriQueryTest

Signed-off-by: Jorge Bescos Gascon <jorge.bescos.gascon@oracle.com>

common/uri/src/test/java/io/helidon/common/uri/UriQueryTest.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2022, 2023 Oracle and/or its affiliates.
+ * Copyright (c) 2022, 2024 Oracle and/or its affiliates.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -72,4 +72,12 @@ void testNullQueryFails() {
     void testNullUriFails() {
         assertThrows(NullPointerException.class, () -> UriQuery.create((URI) null));
     }
+
+    @Test
+    void issue8710() {
+        UriQuery uriQuery = UriQuery.create(URI.create("http://foo/bar?a&b=c"));
+
+        assertThat(uriQuery.all("a"), hasItems());
+        assertThat(uriQuery.all("b"), hasItems("c"));
+    }
 }