[Misdetection] texfile file misdetected as ignorefile

**What should the file have been detected as? What has the file been misdetected as?**
Tried blabla text file, got detected as ignorefile

```
klsdjcdksaljckldsaj
sdakchdsajkchds
asjkdchdsajkh
```

I understand that this is an edge case.

**Please link or attach the misdetected file below** (Do NOT upload PII!)
Provided up

**Additional context**
None

Reproduce the reported text-file sample and compare its detection with the reported ignorefile result. The issue names no source file or test, so trace the file-type detection entry point and add a regression check for this sample once the relevant component is identified.

Written by the indexing model from the issue text.