BUG: Special Chars in Business Type

Frontend/lib/mih_packages/mzansi_profile/business_profile/package_tools/mih_business_details.dart

@@ -359,7 +359,8 @@ class _MihBusinessDetailsState extends State<MihBusinessDetails> {
                             requiredText: true,
                             hintText: "Business Type",
                             validator: (value) {
-                              return MihValidationServices().isEmpty(value);
+                              return MihValidationServices()
+                                  .validateNoSpecialChars(value);
                             },
                           ),
                           const SizedBox(height: 10),

Frontend/lib/mih_packages/mzansi_profile/business_profile/profile_business_add.dart

@@ -387,7 +387,8 @@ class _ProfileBusinessAddState extends State<ProfileBusinessAdd> {
                         requiredText: true,
                         hintText: "Business Type",
                         validator: (value) {
-                          return MihValidationServices().isEmpty(value);
+                          return MihValidationServices()
+                              .validateNoSpecialChars(value);
                         },
                       ),
                       const SizedBox(height: 10.0),

Frontend/lib/mih_services/mih_validation_services.dart

@@ -6,6 +6,17 @@ class MihValidationServices {
     return null;
   }
 
+  String? validateNoSpecialChars(String? value) {
+    if (value == null || value.isEmpty) {
+      return "This field is required";
+    }
+    final specialCharRegex = RegExp(r"^[\w,'& ]+$");
+    if (!specialCharRegex.hasMatch(value)) {
+      return "Only , ' & _ Special characters are allowed";
+    }
+    return null;
+  }
+
   String? validateLength(String? value, int maxLength) {
     if (value == null || value.isEmpty) {
       return "This field is required";