Fix: do not run product info parsing logic on non product pages

[Strajk]

Due to current architecture based on object getters and destructuring, product page logic is executed also on non-product pages... e.g. productPrice is called on e-shop home page.

Current 🤔

Proposed 🥳

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I'm working on more support for more shops, and in some, the logic for getting the price is a little bit more complicated and it should be run only if needed.

[Strajk]

btw if you don't have the release to chrome store automated (yet), do not feel obliged to do it after every single PR – I plan to add support for every shop in separate PR :)

[junkycoder]

@Strajk thaaanks man, nice optimisation catch 👍

Ping me whenever you will be ready to release