feat: cache cells by dataset uid #1252

Job	Run time
⬢ Prepare Node.js	17s
🔍 Check if pull request	2s
🐍 Prepare Python	29s
🧱 Build test matrix	8s
🔍 Check	2m 27s
📝 Build API docs	44s
🗃 Build datasets	2m 1s
🧱 Build Spotlight	3m 21s
🧪 Doc Test	1m 55s
🧪 Unit Test	1m 24s
🔍 Check wheel contents	30s
🧪 Integration Test (ubuntu-latest, 3.8)	10m 10s
🧪 UI Test (chrome)	3m 38s
🧪 UI Test (firefox)	3m 23s
🚀 Release Spotlight	0s
	30m 29s

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