[CON-230] .continueignore doesn't respect negations

[sestinj]

Before submitting your bug report

• [X] I believe this is a bug. I'll try to join the Continue Discord for questions
• [X] I'm not able to find an open issue that reports the same bug
• [X] I've seen the troubleshooting guide on the Continue Docs

Relevant environment info

- OS:*
- Continue:*
- IDE:*

Description

A pattern such as

**/*.*
!**/*.ts

should tell Continue only to index .ts files. But instead the effect is to index no files

To reproduce

No response

Log output

No response

_CON-230