Update index test case for forward-compatibility with server 8.3 (#1455)

Cherry-pick c39093a to fix failing tests on latest servers.

Revert `server_version_is_at_least` to older name: `newer_than`.

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Co-authored-by: Ezra Chung <[email protected]>

Author: kevinAlbs

src/mongocxx/test/index_view.cpp

@@ -370,7 +370,10 @@ TEST_CASE("drop_one", "[index_view]") {
         auto cursor = indexes.list();
         REQUIRE(std::distance(cursor.begin(), cursor.end()) == 1);
 
-        REQUIRE_THROWS_AS(indexes.drop_one("foo"), operation_exception);
+        // SERVER-90152: "dropIndex should be idempotent"
+        if (!test_util::newer_than("8.3")) {
+            REQUIRE_THROWS_AS(indexes.drop_one("foo"), operation_exception);
+        }
     }
 }