fix: allow user override of internal ThProps #808

Job	Run time
call-build-lint-test-workflow / build	1m 26s
call-build-lint-test-workflow / test_component	2m 18s
call-build-lint-test-workflow / test_e2e	2m 19s
call-build-lint-test-workflow / test_a11y	3m 47s
call-build-lint-test-workflow / lint	1m 10s
call-build-lint-test-workflow / test_jest	1m 48s
	12m 48s

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