feat: color no longer tied to task execution order (#9023)
### Description
Related to https://github.com/vercel/turborepo/pull/9008/files
- color order is no longer tied to task execution order
- color is no longer tied to task hashes which change frequently
This should end up with more consistent colors between runs
### Testing Instructions
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Co-authored-by: Shahar Shalev <shahar.shalev@autodesk.com>
