fix(i18n): scope the empty Min Client Ver hint to cores that honour it

The REALITY Min Client Ver hint promised that an empty field accepts every
client version. That is only true on Xray-core v26.9.8+, but the panel's
core switcher still installs v26.7.11 to v26.9.7, where an empty field falls
back to a built-in 26.3.27 minimum and silently diverts older and
third-party clients (Mihomo, sing-box) to the REALITY target. Operators on
those cores were told the field was not the cause.

The hint now names the version boundary in all 13 locales, matching the
docs site. Text-only: no test can reach it; the change is visible in the
inbound form's REALITY tooltip after `npm run build`.

Closes #6568

internal/web/translation/zh-TW.json

@@ -618,7 +618,7 @@
         "maxTimeDiff": "最大時間差 (ms)",
         "minClientVer": "最小客戶端版本",
         "maxClientVer": "最大客戶端版本",
-        "minClientVerHint": "留空表示不設下限：Xray-core 接受任何客戶端版本，包括 Mihomo、sing-box 等第三方核心。填寫版本可拒絕自報版本較低的客戶端。",
+        "minClientVerHint": "在 Xray-core v26.9.8 及以上版本中，留空表示不設下限：接受任何客戶端版本，包括 Mihomo、sing-box 等第三方核心。v26.7.11 至 v26.9.7 的核心在留空時會改用內建最低值 26.3.27；在這些核心上填 1.0.0 即可放行這類客戶端。填寫版本可拒絕自報版本較低的客戶端。",
         "maxClientVerHint": "留空表示無上限。若填寫，不得低於最小客戶端版本，否則所有客戶端都會被拒絕。",
         "clientVerInvalid": "客戶端版本須為最多三段以點分隔的數字，每段 0-255（例如 26.3.27）",
         "maxClientVerBelowMin": "最大客戶端版本不得低於最小客戶端版本",