changed primary color usage to fix the color bug in dark mode

Changed Theme.of(context).primaryColor to Theme.of(contex).colorScheme.primary to make dark mode work properly.

lib/features/fund_transfer/screens/fund_transfer_amount_screen.dart

@@ -334,7 +334,8 @@ class _FundTransferAmountScreenState extends State<FundTransferAmountScreen> {
                 elevation: 0,
                 margin: const EdgeInsets.symmetric(vertical: 8.0),
                 child: ListTile(
-                  leading: getBankLogo(widget.creditBeneficiary.bankName),
+                  leading:
+                      getBankLogo(widget.creditBeneficiary.bankName, context),
                   title: Text(widget.creditBeneficiary.name),
                   subtitle: Text(widget.creditBeneficiary.accountNo),
                 ),
@@ -367,12 +368,12 @@ class _FundTransferAmountScreenState extends State<FundTransferAmountScreen> {
                     },
                     borderRadius: BorderRadius.circular(10),
                     selectedColor: Theme.of(context).colorScheme.onPrimary,
-                    fillColor: Theme.of(context).primaryColor,
+                    fillColor: Theme.of(context).colorScheme.primary,
                     color: Theme.of(context).colorScheme.onSurface,
                     borderColor: Colors.transparent,
                     selectedBorderColor: Colors.transparent,
-                    splashColor: Theme.of(context).primaryColor,
-                    highlightColor: Theme.of(context).primaryColor,
+                    splashColor: Theme.of(context).colorScheme.primary,
+                    highlightColor: Theme.of(context).colorScheme.primary,
                     children: [
                       Padding(
                         padding: const EdgeInsets.symmetric(
@@ -427,6 +428,7 @@ class _FundTransferAmountScreenState extends State<FundTransferAmountScreen> {
                   child: Text(AppLocalizations.of(context).proceed),
                 ),
               ),
+              const SizedBox(height: 10),
             ],
           ),
         ),

lib/features/fund_transfer/screens/fund_transfer_beneficiary_screen.dart

@@ -86,7 +86,7 @@ class _FundTransferBeneficiaryScreenState
           leading: CircleAvatar(
             radius: 24,
             backgroundColor: Colors.transparent,
-            child: getBankLogo(beneficiary.bankName),
+            child: getBankLogo(beneficiary.bankName, context),
           ),
           title: Text(beneficiary.name),
           subtitle: Column(

lib/features/fund_transfer/screens/transaction_pin_screen.dart

@@ -94,7 +94,7 @@ class _TransactionPinScreenState extends State<TransactionPinScreen> {
             shape: BoxShape.circle,
             border: Border.all(color: Theme.of(context).primaryColor, width: 2),
             color: index < _pin.length
-                ? Theme.of(context).primaryColor
+                ? Theme.of(context).colorScheme.primary
                 : Colors.transparent,
           ),
         );
@@ -142,11 +142,7 @@ class _TransactionPinScreenState extends State<TransactionPinScreen> {
   Widget build(BuildContext context) {
     return Scaffold(
       appBar: AppBar(
-        title: Text(
-          AppLocalizations.of(context).tpin,
-          style:
-              const TextStyle(color: Colors.black, fontWeight: FontWeight.w500),
-        ),
+        title: Text(AppLocalizations.of(context).tpin),
         centerTitle: false,
       ),
       body: _loading