Product Query [3]: [Tests] Add E2E tests for the FSE functionalities

[sunyatasattva]

E2E tests should test at least these paths:

Editor side:

• When the toggle is enabled, all filters are disabled and can't be chosen anymore. If they were chosen before, they are now reset.
• Toggle should not be available inside non-FSE pages and posts.

Front-end side:

• It works in combination with the Product Search template.
• It works in combination with the Products by Category template.
• It works in combination with the Product Catalog template.
• It works in combination with the Products by Tag template.

Note that this issue is not supposed to E2E test filters.

Old specs

These specs only apply if we do a custom implementation of “Inherit Query from Template”:

Editor side:

• When the toggle is enabled, taxonomies are disabled and can't be chosen anymore from the filters. If they were chosen before, they are now reset.
• When the toggle is enabled, and we are in FSE templates, the correct preview is shown.

Front-end side:

• More specific settings can override the global query.