[E2E] Deprecate the `/question/new` route for simple mode (#21564)

docs/developers-guide/e2e-tests.md

frontend/test/metabase-visual/notebook/notebook.cy.spec.js

.../test/metabase/scenarios/admin/datamodel/field.cy.spec.js

...tabase/scenarios/binning/binning-reproductions.cy.spec.js

...t/metabase/scenarios/binning/qb-explicit-joins.cy.spec.js

frontend/test/metabase/scenarios/binning/sql.cy.spec.js

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frontend/test/metabase/scenarios/dashboard/x-rays.cy.spec.js

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frontend/test/metabase/scenarios/native/data_ref.cy.spec.js

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.../scenarios/native/snippets/snippet-permissions.cy.spec.js

...abase/scenarios/onboarding/reference/databases.cy.spec.js

...-question-in-database-without-data-permissions.cy.spec.js

frontend/test/metabase/scenarios/question/loading.cy.spec.js

frontend/test/metabase/scenarios/question/nested.cy.spec.js

frontend/test/metabase/scenarios/question/new.cy.spec.js

...est/metabase/scenarios/question/query-external.cy.spec.js

...roductions/13263-postgres-show-row-details-on-pk-click.js

...ns/14957-unable-to-save-question-before-query-executed.js