fix(telegram): fallback to document when photo dimensions exceed limits#19630
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Telegram's send_photo has dimension limits (sum of width+height <= 10000px). When sending large screenshots or tall images, the API returns 'Photo_invalid_dimensions' error. Fix: Catch this specific error in send_image_file() and automatically fallback to send_document() which has no dimension limits (only 50MB size). This is similar to the existing 5MB URL fallback (commit 542faf2) but handles local files with dimension issues instead of URL size issues.
This was referenced May 4, 2026
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Salvage of #15728 onto current main.\n\n## Summary\nTelegram's send_photo API rejects images where width+height > 10000px with . Catch that error and automatically fall back to (no dimension limit, 50MB size cap).\n\n## Validation\nManual review; diff scope self-contained.\n\nOriginal PR: #15728