TF-3487 Handle get email content failure

lib/features/email/domain/state/get_email_content_state.dart

@@ -51,5 +51,6 @@ class GetEmailContentFromCacheSuccess extends UIState {
 
 class GetEmailContentFailure extends FeatureFailure {
 
-  GetEmailContentFailure(dynamic exception) : super(exception: exception);
+  GetEmailContentFailure(dynamic exception, {super.onRetry})
+    : super(exception: exception);
 }

lib/features/email/domain/usecases/get_email_content_interactor.dart

@@ -49,7 +49,17 @@ class GetEmailContentInteractor {
       }
     } catch (e) {
       log('GetEmailContentInteractor::execute(): exception = $e');
-      yield Left<Failure, Success>(GetEmailContentFailure(e));
+      yield Left<Failure, Success>(GetEmailContentFailure(
+        e,
+        onRetry: execute(
+          session,
+          accountId,
+          emailId,
+          baseDownloadUrl,
+          transformConfiguration,
+          additionalProperties: additionalProperties
+        ),
+      ));
     }
   }
 
@@ -97,7 +107,17 @@ class GetEmailContentInteractor {
       }
     } catch (e) {
       logError('GetEmailContentInteractor::_getContentEmailFromServer():EXCEPTION: $e');
-      yield Left<Failure, Success>(GetEmailContentFailure(e));
+      yield Left<Failure, Success>(GetEmailContentFailure(
+        e,
+        onRetry: execute(
+          session,
+          accountId,
+          emailId,
+          baseDownloadUrl,
+          transformConfiguration,
+          additionalProperties: additionalProperties
+        ),
+      ));
     }
   }