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/fields/datetimeOptional.json

@@ -83,7 +83,7 @@
     "fields": {
         "date": {
             "type": "date",
-            "disabled": true
+            "utility": true
         }
     },
     "validationList": [