refactor(billing-v2): drop balanceLeads from InsufficientBalanceException

app/tests/Unit/Exceptions/InsufficientBalanceExceptionTest.php

@@ -0,0 +1,27 @@
+<?php
+
+declare(strict_types=1);
+
+use App\Exceptions\Billing\InsufficientBalanceException;
+
+it('exposes priceKopecks and balanceRub but no balanceLeads', function () {
+    $e = new InsufficientBalanceException(
+        priceKopecks: 12000,
+        balanceRub: '50.00',
+    );
+
+    expect($e->priceKopecks)->toBe(12000);
+    expect($e->balanceRub)->toBe('50.00');
+    expect(property_exists($e, 'balanceLeads'))->toBeFalse();
+});
+
+it('formats message without balance_leads', function () {
+    $e = new InsufficientBalanceException(
+        priceKopecks: 12000,
+        balanceRub: '50.00',
+    );
+
+    expect($e->getMessage())->not->toContain('balance_leads');
+    expect($e->getMessage())->toContain('12000');
+    expect($e->getMessage())->toContain('50.00');
+});