feat: upgrade pigeon to version 26.3.4 (#18205)

* feat: upgrade pigeon to version 26.3.4

* fix cloud firestore

* fix

* fix

* fixes

* fix

* format

* fix: resolve post-merge CI failures for pigeon upgrade

Author: Lyokone

melos.yaml

@@ -239,6 +239,7 @@ scripts:
       melos exec -- "flutter pub run pigeon --input ./pigeons/messages.dart" && \
       melos run generate:pigeon:macos --no-select && \
       melos run generate:pigeon:android --no-select && \
+      melos run generate:pigeon:windows --no-select && \
       melos run format-ci --no-select
     packageFilters:
       fileExists: 'pigeons/messages.dart'
@@ -259,6 +260,13 @@ scripts:
       dirExists: 'android'
     description: Transform the method toList() into a public one to be used in EventChannel
 
+  generate:pigeon:windows:
+    run: |
+      melos exec -- "perl -i -pe 's{^(\s+::flutter::EncodableList ToEncodableList\(\) const;)\n}{ public:\n\$1\n private:\n}' ./windows/messages.g.h"
+    packageFilters:
+      fileExists: 'windows/messages.g.h'
+    description: Make ToEncodableList public so it can be called from plugin code.
+
   # Additional cleanup lifecycle script, executed when `melos clean` is run.
   postclean: >
     melos exec -c 6 -- "flutter clean"

packages/cloud_firestore/analysis_options.yaml

@@ -0,0 +1,11 @@
+# Copyright 2026 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# in the LICENSE file.
+
+include: ../../analysis_options.yaml
+
+analyzer:
+  exclude:
+    - cloud_firestore_platform_interface/lib/src/pigeon/messages.pigeon.dart
+    - cloud_firestore_platform_interface/test/pigeon/test_api.dart
+    - cloud_firestore_platform_interface/pigeons/messages.dart