The SDK rejects the connection to `.kusto.fabric.microsoft.us` in gov cloud

**Describe the bug**
The allow-list entry for `https://login.microsoftonline.us` does not include the suffix `.kusto.fabric.microsoft.us`, therefore it rejects KQL database cluster in the Azure Government cloud (e.g., Fairfax).

There appears to be a sync gap between the internal ADO repo and this public repo. The suffix was added to the well-known Kusto endpoints in the internal ADO repository back in early March 2026 (see "Azure-Kusto-Service", PR 14938763), but that change never made it into this package.

**Expected behavior**

The host is recognised as trusted and the query is sent, exactly as it is for `*.kusto.fabric.microsoft.com` in the public cloud.

**Setup (please complete the following information):**
- SDK Version: 7.2.0
- node version: v20.20.2
- typescript version: 5.9.3

**Browser Setup (please complete the following information):**
- framework: React 18.3.1
- server env: yarn 4.9.1
- browser name/version: Microsoft Edge v151

**Desktop (please complete the following information):**
- OS: Windows 11 Enterprise
- Version: 10.0.26200

Start by locating the allow-list entry for https://login.microsoftonline.us and the existing *.kusto.fabric.microsoft.com endpoint handling. Add coverage for the .kusto.fabric.microsoft.us suffix so the host is recognised as trusted and the query is sent in Azure Government cloud; verify with the relevant SDK tests.

Written by the indexing model from the issue text.