feat: handle non-numeric sequences in huggingface datasource #706

Job	Run time
🐍 Prepare Python	28s
🔍 Check if pull request	4s
⬢ Prepare Node.js	28s
🧱 Build test matrix	9s
📝 Build API docs	47s
🗃 Build datasets	2m 4s
🧱 Build Spotlight	2m 49s
🧪 Doc Test	1m 31s
🧪 Unit Test	1m 22s
🔍 Check	2m 12s
🧪 Integration Test (ubuntu-latest, 3.8)	9m 38s
🔍 Check wheel contents	47s
🧪 UI Test (chrome)	2m 12s
🧪 UI Test (firefox)	3m 37s
🚀 Release Spotlight	0s
	28m 8s

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