chore: Update copyright year from 2025 to 2026 across core files

- Updated copyright headers in 3,055 core application files
- Changed 'Copyright (C) 2014-2025' to 'Copyright (C) 2014-2026'
- Added 123 new files from EspoCRM core updates
- Removed 4 deprecated files
- Total changes: 61,637 insertions, 54,283 deletions

This is a routine maintenance update for the new year 2026.

application/Espo/Resources/metadata/entityDefs/Preferences.json

@@ -111,6 +111,10 @@
             "type": "bool",
             "default": true
         },
+        "reactionNotificationsNotFollowed": {
+            "type": "bool",
+            "default": false
+        },
         "autoFollowEntityTypeList": {
             "type": "multiEnum",
             "view": "views/preferences/fields/auto-follow-entity-type-list",
@@ -207,6 +211,10 @@
             "default": [],
             "tooltip": true
         },
+        "followAsCollaborator": {
+            "type": "bool",
+            "default": true
+        },
         "emailUseExternalClient": {
             "type": "bool",
             "default": false