fix(common): custom trapdoors not opening #6466

Job	Run time
get-build-packages	4s
get-lint-packages	6s
get-test-packages	4s
monorepo-lint	58s
build (eslint-plugin-isaacscript)	27s
build (docs)	27s
build (isaac-typescript-definitions)	34s
build (isaacscript-cli)	34s
build (isaac-lua-polyfill)	30s
build (isaacscript-common)	1m 3s
build (isaac-typescript-definitions-repentogon)	30s
lint (eslint-config-isaacscript)	40s
lint (docs)	40s
lint (isaac-typescript-definitions)	40s
lint (isaacscript-spell)	36s
lint (isaac-lua-polyfill)	42s
lint (isaac-typescript-definitions-repentogon)	45s
lint (eslint-plugin-isaacscript)	45s
lint (isaacscript-cli)	46s
lint (isaacscript-common)	1m 20s
test (eslint-plugin-isaacscript)	35s
test (isaacscript-cli)	24s
Discord Failure Notification	-1s
	13m 9s

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