add theming to toc #5645

Job	Run time
🖥️ Lint, test, build frontend	1m 10s
Tests on ubuntu-latest, Python 3.8 with core dependencies	2m 1s
Tests on ubuntu-latest, Python 3.8 with core,optional dependencies	3m 30s
Check for typos	6s
Tests on macos-latest, Python 3.8 with core dependencies	2m 35s
Tests on macos-latest, Python 3.8 with core,optional dependencies	2m 57s
Tests on windows-latest, Python 3.8 with core dependencies	4m 16s
Tests on windows-latest, Python 3.8 with core,optional dependencies	9m 14s
Tests on ubuntu-latest, Python 3.9 with core dependencies	2m 6s
Tests on ubuntu-latest, Python 3.10 with core dependencies	2m 6s
Tests on ubuntu-latest, Python 3.11 with core dependencies	15m 12s
Tests on ubuntu-latest, Python 3.12 with core dependencies	2m 14s
Tests on ubuntu-latest, Python 3.9 with core,optional dependencies	3m 25s
Tests on ubuntu-latest, Python 3.10 with core,optional dependencies	15m 12s
Tests on ubuntu-latest, Python 3.11 with core,optional dependencies	3m 6s
Tests on ubuntu-latest, Python 3.12 with core,optional dependencies	3m 34s
	1h 12m 44s

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