fix(ui): remove invalid MUI v5 Button loading prop project-wide

prop loading روی Button فقط در MUI v6+ پشتیبانی می‌شود؛ این پروژه v5 است
و هشدار "Received false for a non-boolean attribute loading" می‌داد.
- دکمه‌های login/verify: disabled + CircularProgress شرطی (بازخورد بصری حفظ شد)
- بقیه دکمه‌ها: loading → disabled (ادغام با disabled موجود در صورت وجود)

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

components/register/LogInPage.js

@@ -1,7 +1,7 @@
 import Field from "@/app/component/element/Field";
 import { validatePhoneNumber } from "@/helper";
 import { request } from "@/services/response";
-import { InputAdornment, Button } from "@mui/material";
+import { InputAdornment, Button, CircularProgress } from "@mui/material";
 import Link from "next/link";
 import { useState } from "react";
 import { toast } from "react-toastify";
@@ -72,7 +72,7 @@ function LogInPage({ setIsSendMsg, num, setNum, setUuid, matchedCity, setStep })
       <Button
         fullWidth
         variant="contained"
-        loading={loading}
+        disabled={loading}
         onClick={() => {
           const checkedNum = validatePhoneNumber(num);
           if (!checkedNum.valid) {
@@ -83,7 +83,7 @@ function LogInPage({ setIsSendMsg, num, setNum, setUuid, matchedCity, setStep })
         }}
         className="!rounded-[8px] !bg-[#5559CE] !py-[7.5px] md:!py-[8.5px] lg:!py-[10px]"
       >
-        ورود
+        {loading ? <CircularProgress size={22} sx={{ color: "#fff" }} /> : "ورود"}
       </Button>
       <p className="text-[#525252] text-[14px] font-normal text-center mt-[34px] sm:mt-[36px] md:mt-[38px] lg:mt-[40px]">
         <Link href="/">

components/register/verificationPage/SendReq.js

@@ -1,4 +1,4 @@
-import { Button } from "@mui/material";
+import { Button, CircularProgress } from "@mui/material";
 import { request } from "@/services/response";
 import Cookies from "js-cookie";
 import { handleTimeExpiresToken } from "@/helper";
@@ -112,7 +112,7 @@ function SendReq({
       }}
       className="!rounded-[8px] !bg-[#5559CE]"
     >
-      تایید
+      {loading ? <CircularProgress size={22} sx={{ color: "#fff" }} /> : "تایید"}
     </Button>
   );
 }