Fix code formatting issues in AccountService

Applied dotnet format to fix whitespace formatting errors:
- Fixed spacing after if statements
- Fixed blank line spacing between methods
- Ensures CI/CD formatting checks pass

Co-authored-by: PhantomDave <34485699+PhantomDave@users.noreply.github.com>

Author: Copilot

PhantomDave.BankTracking.Api/Services/AccountService.cs

@@ -22,7 +22,7 @@ public AccountService(IUnitOfWork unitOfWork)
     {
         return await _unitOfWork.Accounts.GetSingleOrDefaultAsync(a => a.Email == email);
     }
-    
+
     public async Task<IEnumerable<Account>> GetAllAccountsAsync()
     {
         return await _unitOfWork.Accounts.GetAllAsync();
@@ -74,11 +74,11 @@ private async Task<bool> IsEmailAlreadyPresent(string email)
     public async Task<Account?> LoginAccountAsync(string email, string password)
     {
         var account = await GetAccountByEmail(email);
-        if(account == null)
+        if (account == null)
             return null;
         return VerifyPassword(password, account.PasswordHash) ? account : null;
     }
-    
+
     private static string HashPassword(string password)
     {
         const int iterations = 100_000;
@@ -90,7 +90,7 @@ private static string HashPassword(string password)
 
         return $"PBKDF2-SHA256${iterations}${Convert.ToBase64String(salt)}${Convert.ToBase64String(hash)}";
     }
-    
+
     private static bool VerifyPassword(string password, string stored)
     {
         if (string.IsNullOrWhiteSpace(stored))