perf: sent `data-path` once for each file (#17657)

perf: sent `data-path` once for each file (#17657)

- Don't sent it with each line, instead send it at the top-element for each file.
- Related:
https://github.com/go-gitea/gitea/pull/17618#issuecomment-968192761

2.5K Additions:
No-Patch:
Unified: 2.14 MB (2.14 MB size)
Split: 2.59 MB (2.59 MB size)

Patch:
Unified: 2.10 MB (2.10 MB size) (-1.8%)
Split: 2.55 MB (2.55 MB size) (-1.5%)