Add unknown status into unresolved lookup #717

Job	Run time
Static Analysis - P8.3 - L11.x - prefer-lowest	24s
Tests - P8.3 - L11.x - prefer-lowest - MySQL 8.0	1m 18s
Tests - P8.3 - L11.x - prefer-lowest - SQLite	59s
Static Analysis - P8.3 - L11.x - prefer-stable	25s
Tests - P8.3 - L11.x - prefer-stable - MySQL 8.0	1m 20s
Tests - P8.3 - L11.x - prefer-stable - SQLite	55s
Static Analysis - P8.2 - L11.x - prefer-lowest	27s
Tests - P8.2 - L11.x - prefer-lowest - MySQL 8.0	1m 22s
Tests - P8.2 - L11.x - prefer-lowest - SQLite	1m 9s
Static Analysis - P8.2 - L11.x - prefer-stable	24s
Tests - P8.2 - L11.x - prefer-stable - MySQL 8.0	1m 18s
Tests - P8.2 - L11.x - prefer-stable - SQLite	59s
Tests - P8.3 - L11.x - prefer-lowest - PostgreSQL 13	1m 18s
Tests - P8.3 - L11.x - prefer-stable - PostgreSQL 13	1m 23s
Tests - P8.2 - L11.x - prefer-lowest - PostgreSQL 13	1m 17s
Tests - P8.2 - L11.x - prefer-stable - PostgreSQL 13	1m 19s
check	1s
	16m 18s

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