Chore(cicd_bot): Make console printing optional

[VaggelisD]

Currently MarkdownConsole consumes warnings & errors in order to display them as banners in their relevant Github Actions checks; For instance, a failed non-blocking audit is presented as such:

However, these are not printed in the console (i.e the logs of SQLMesh Actions Workflow) and the user can't change that behavior. With the new flag, the user now sees that warning both on the relevant check and on the logs:

2026-01-12 16:40:14,272 - MainThread - sqlmesh.core.console - WARNING - 'not_null_non_blocking' audit error: 1 row failed. Audit query:
SELECT * FROM "db"."sqlmesh__sqlmesh_example"."sqlmesh_example__derived_model__1012593465" AS "sqlmesh_example__derived_model__1012593465" WHERE "id" IS NULL AND TRUE (console.py:2335)
Warning:  sqlmesh_example__sqlmesh_cicd_bot_dev_12.derived_model: 'not_null_non_blocking' audit error: 1 row failed.