TW-4308 Add labels for several messages part 2 (#4431)

Add ChooseLabelModal, delegate, and update label UI components

Wire add-labels action across Thread, Search, and Dashboard

lib/features/mailbox_dashboard/presentation/extensions/labels/handle_logic_label_extension.dart

@@ -75,11 +75,32 @@ extension HandleLogicLabelExtension on MailboxDashBoardController  {
     updateEmailFlagByEmailIds(
       [emailId],
       isLabelAdded: !shouldRemove,
-      labelKeyword: labelKeyword,
+      labelKeywords: [labelKeyword],
     );
   }
 
   void _refreshLabelSettingEnabled() {
     labelController.isLabelSettingEnabled.refresh();
   }
+
+  void syncListLabelForListEmail(
+    List<EmailId> emailIds,
+    List<KeyWordIdentifier> labelKeywords,
+    {bool shouldRemove = false}
+  ) {
+    _syncLabelsForEmailList(emailIds, labelKeywords, shouldRemove);
+    _refreshLabelSettingEnabled();
+  }
+
+  void _syncLabelsForEmailList(
+    List<EmailId> emailIds,
+    List<KeyWordIdentifier> labelKeywords,
+    bool shouldRemove,
+  ) {
+    updateEmailFlagByEmailIds(
+      emailIds,
+      labelKeywords: labelKeywords,
+      isLabelAdded: !shouldRemove,
+    );
+  }
 }

lib/features/mailbox_dashboard/presentation/extensions/update_current_emails_flags_extension.dart

@@ -15,13 +15,13 @@ extension UpdateCurrentEmailsFlagsExtension on MailboxDashBoardController {
     bool markAsAnswered = false,
     bool markAsForwarded = false,
     bool isLabelAdded = false,
-    KeyWordIdentifier? labelKeyword,
+    List<KeyWordIdentifier>? labelKeywords,
   }) {
     if (readAction == null &&
         markStarAction == null &&
         !markAsAnswered &&
         !markAsForwarded &&
-        labelKeyword == null) {
+        labelKeywords?.isNotEmpty != true) {
       return;
     }
 
@@ -64,8 +64,8 @@ extension UpdateCurrentEmailsFlagsExtension on MailboxDashBoardController {
         _updateKeyword(email, KeyWordIdentifier.emailForwarded, true);
       }
 
-      if (labelKeyword != null) {
-        _updateKeyword(email, labelKeyword, isLabelAdded);
+      if (labelKeywords?.isNotEmpty == true) {
+        _updateListKeywords(email, labelKeywords!, isLabelAdded);
       }
     }
 
@@ -84,6 +84,16 @@ extension UpdateCurrentEmailsFlagsExtension on MailboxDashBoardController {
     }
   }
 
+  void _updateListKeywords(
+    PresentationEmail presentationEmail,
+    List<KeyWordIdentifier> keywords,
+    bool value,
+  ) {
+    for (var keyword in keywords) {
+      _updateKeyword(presentationEmail, keyword, value);
+    }
+  }
+
   void updateEmailAnswered(EmailId emailId) {
     dispatchThreadDetailUIAction(UpdatedEmailKeywordsAction(
       emailId,