refactor(mobile): form & form field (#25042)

* refactor: form & form field

* chore: remove unused components

---------

Co-authored-by: shenlong-tanwen <139912620+shalong-tanwen@users.noreply.github.com>
Co-authored-by: Alex <alex.tran1502@gmail.com>

mobile/packages/ui/lib/src/theme.dart

@@ -0,0 +1,42 @@
+import 'package:flutter/material.dart';
+import 'package:immich_ui/src/constants.dart';
+
+class ImmichThemeProvider extends StatelessWidget {
+  final ColorScheme colorScheme;
+  final Widget child;
+
+  const ImmichThemeProvider({super.key, required this.colorScheme, required this.child});
+
+  @override
+  Widget build(BuildContext context) {
+    return Theme(
+      data: Theme.of(context).copyWith(
+        colorScheme: colorScheme,
+        brightness: colorScheme.brightness,
+        inputDecorationTheme: InputDecorationTheme(
+          floatingLabelBehavior: FloatingLabelBehavior.always,
+          focusedBorder: OutlineInputBorder(
+            borderSide: BorderSide(color: colorScheme.primary),
+            borderRadius: const BorderRadius.all(Radius.circular(ImmichRadius.md)),
+          ),
+          enabledBorder: OutlineInputBorder(
+            borderSide: BorderSide(color: colorScheme.primary),
+            borderRadius: const BorderRadius.all(Radius.circular(ImmichRadius.md)),
+          ),
+          errorBorder: OutlineInputBorder(
+            borderSide: BorderSide(color: colorScheme.error),
+            borderRadius: const BorderRadius.all(Radius.circular(ImmichRadius.md)),
+          ),
+          focusedErrorBorder: OutlineInputBorder(
+            borderSide: BorderSide(color: colorScheme.error),
+            borderRadius: const BorderRadius.all(Radius.circular(ImmichRadius.md)),
+          ),
+          labelStyle: TextStyle(color: colorScheme.primary, fontWeight: FontWeight.w600),
+          hintStyle: const TextStyle(fontSize: ImmichTextSize.body),
+          errorStyle: TextStyle(color: colorScheme.error, fontWeight: FontWeight.w600),
+        ),
+      ),
+      child: child,
+    );
+  }
+}