`sql:migrate --force` should ignore invalid connector

[fredzqm]

Description

CI/CD CUJ on non-prod workflow should set cloud sql state to whatever is in local configs. The following two commands should always work regardless of destructive schema migration of invalid connectors.

firebase dataconnect:sql:migrate --force
firebase deploy --only dataconnect --force

Previous, dataconnect:sql:migrate --force aborts upon invalid connector. This PR handles this edge case.

Scenarios Tested

firebase deploy with invalid connectors

firebase dataconnect:sql:migrate with invalid connectors

firebase dataconnect:sql:migrate --force with invalid connectors

Sample Commands