chore(#8437): enable useUnknownInCatchVariables rule in tsconfig #22470

Job	Run time
Compile the app	14m 14s
test-config-default	3m 13s
test-cht-form	4m 14s
ci-integration-all-k3d	16m 45s
ci-integration-all-all	13m 43s
ci-integration-sentinel-k3d	12m 59s
ci-integration-sentinel-all	10m 46s
ci-webdriver-default-mobile-all	8m 7s
Lint translations	1m 1s
ci-webdriver-default-core-minimum-browser	19m 51s
ci-webdriver-default-core	13m 21s
ci-webdriver-default-data	13m 27s
ci-webdriver-default-enketo-minimum-browser	14m 1s
ci-webdriver-default-enketo	13m 17s
ci-webdriver-default-lowLevel	11m 1s
ci-webdriver-default-workflows	23m 15s
Publish branch build	0s
Upgrade from ${{ matrix.version }}	0s
Publish generated docs	0s
	3h 13m 15s

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