refactor: theme typing, error UX, a11y, lint config, dev hygiene #945

Job	Run time
build-deploy-diracx-web-dev-image	1m 56s
build-storybook-docs	1m 29s
release-please	0s
build-deploy-library-package	0s
build-deploy-diracx-web-release-image	0s
Update Helm charts	0s
deploy-storybook-docs	-1s
	3m 24s

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