[POS Orders] Add analytics for point of sale order filtering

[iamgabrielma]

Closes WOOMOB-705

Description

This PR adds analytics when filtering orders by POS. We add sales_channel: pos to the existing orders_list_filter event if POS as sales channel has been selected for filtering orders.

Screen.Recording.2025-07-10.at.17.07.03.mov

Testing information

• In order filters, Sales Channel > Point of sale, tap Show Orders. Observe the property sales_channel: pos is tracked

🔵 Tracked orders_list_filter, properties: [sales_channel: pos, blog_id: -1, store_id: c5bd46cc-1804-4f7b-badb-bb98c449127f, is_wpcom_store: false, site_url: https://indiemelon.mystagingwebsite.com, plan: , was_ecommerce_trial: false]

• Now select Any, tap Show Orders. Observe the property sales_channel is not tracked

🔵 Tracked orders_list_filter, properties: [blog_id: -1, is_wpcom_store: false, was_ecommerce_trial: false, plan: , store_id: c5bd46cc-1804-4f7b-badb-bb98c449127f, site_url: https://indiemelon.mystagingwebsite.com]

• Try some combiation with other filters, as long as Point of sale is an active filter, it should be tracked.

🔵 Tracked orders_list_filter, properties: [was_ecommerce_trial: false, is_wpcom_store: false, date_range: last_7_days, sales_channel: pos, site_url: https://indiemelon.mystagingwebsite.com, status: completed, plan: , blog_id: -1, store_id: c5bd46cc-1804-4f7b-badb-bb98c449127f]

---

• TODO: Update event in tracks: https://github.com/Automattic/tracks-events-registration/pull/3014

[wpmobilebot]

📲 You can test the changes from this Pull Request in WooCommerce iOS Prototype by scanning the QR code below to install the corresponding build.

	App Name	WooCommerce iOS Prototype
	Build Number	pr15890-26e679b
	Version	22.7
	Bundle ID	com.automattic.alpha.woocommerce
	Commit	26e679b
	Installation URL	0kr80vei4e61g

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[iamgabrielma]

👋 There is no rush to wrap this one before 22.8, it can wait till next week.

[jaclync]

LGTM 🚀

non-blocking: I was wondering how we differentiate the lack of the new event property because it's not available (release version, WC version) vs. the filter set to "Any." This can make it tricky to answer the analytics question like the % of stores set the sales channel filter to POS, since the base number includes stores not seeing the filter. If this is something we want to know, we can track the "any" option for the event property whenever the event is tracked.

[jaclync]

nit: this could be an extension of FilterOrderListViewModel.SalesChannelFilter in the analytics file, could be fileprivate as well.

[iamgabrielma]

Good suggestion, updated on 26e679b

[iamgabrielma]

Thanks for the review!

I was wondering how we differentiate the lack of the new event property because it's not available (release version, WC version) vs. the filter set to "Any." This can make it tricky to answer the analytics question like the % of stores set the sales channel filter to POS, since the base number includes stores not seeing the filter. If this is something we want to know, we can track the "any" option for the event property whenever the event is tracked.

Very good point, at the moment any is the same as nil filtering, but if we want to differentiate the lack of property vs being unset we need to handle it better. I'll raise this with Android as well and make a decision 👍