perf(ExploreProfiles): Improve performance of the "Labels" exploration type + small fixes

[grafakus]

✨ Description

Related issue(s): follow-up of #5

We improve our SceneByVariableRepeaterGrid component:

• Better performance when querying timeseries with groupBy present
• Errors are now caught when the user filters results with invalid regexes

And a DRY refactor by introducing the new SceneLabelValuesDistributionTable (used in SceneGroupByLabels and SceneExploreFavorites),

📖 Summary of the changes

See diff tab for specific comments.

🧪 How to test?

• The build should pass
• The Labels exploration type should render faster all the timeseries when "All" is selected (e.g. try with cortex-dev-01/ingester cpu profile)
• When filtering and providing invalid regexes, the console should not display any errors

[github-actions]

Unit test coverage

Lines	Statements	Branches	Functions
	11.38% (459/4031)	9.09% (134/1474)	8.66% (102/1177)

[grafakus]

We now always pass groupBy and slice the series when they come back.
It's way faster than to emit n queries from the UI.

This not only improves performance, but allow us to remove the custom code for handling favorites in SceneByVariableRepeaterGrid