[Woo POS][Non-Simple Products] Update Variation Name Display Logic

[AnirudhBhat]

Closes: #13330

Description

This PR updates the logic for displaying the name of variable products. Previously, only the attribute value (e.g., Red) was shown. With this change, both the attribute name and value (e.g., Color:Red) will be displayed for better clarity and user understanding.

Changes

1. Added new getNameForPOS function to include both attribute name and attribute value in the format {name}:{value}.
2. Modified the separator from - to , for a cleaner and more intuitive representation of attributes.
3. Display Parent product name in cart when variation is added to cart.

Steps to reproduce

1. Navigate to POS (more menu -> POS)
2. Click on any variable product
3. Ensure you see variation name in the format {attribute name}:{attribute value}
4. Add variation to cart
5. Ensure you see parent product name, attributes, and price of variation in cart

The tests that have been performed

Tested above mentioned steps in both light and dark mode

Images/gif

• I have considered if this change warrants release notes and have added them to RELEASE-NOTES.txt if necessary. Use the "[Internal]" label for non-user-facing changes.

Reviewer (or Author, in the case of optional code reviews):

Please make sure these conditions are met before approving the PR, or request changes if the PR needs improvement:

• The PR is small and has a clear, single focus, or a valid explanation is provided in the description. If needed, please request to split it into smaller PRs.
• Ensure Adequate Unit Test Coverage: The changes are reasonably covered by unit tests or an explanation is provided in the PR description.
• Manual Testing: The author listed all the tests they ran, including smoke tests when needed (e.g., for refactorings). The reviewer confirmed that the PR works as expected on big (tablet) and small (phone) in case of UI changes, and no regressions are added.

[wpmobilebot]

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

	App Name	WooCommerce-Wear Android
	Platform	⌚️ Wear OS
	Flavor	Jalapeno
	Build Type	Debug
	Commit	a0461ca
	Direct Download	woocommerce-wear-prototype-build-pr13332-a0461ca.apk

[wpmobilebot]

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

	App Name	WooCommerce Android
	Platform	📱 Mobile
	Flavor	Jalapeno
	Build Type	Debug
	Commit	a0461ca
	Direct Download	woocommerce-prototype-build-pr13332-a0461ca.apk

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 46.15385% with 7 lines in your changes missing coverage. Please review.

Project coverage is 41.09%. Comparing base (a938c73) to head (a0461ca).
Report is 21 commits behind head on trunk.

Files with missing lines	Patch %	Lines
.../com/woocommerce/android/model/ProductVariation.kt	20.00%	2 Missing and 2 partials ⚠️
...home/items/variations/WooPosVariationsViewModel.kt	33.33%	1 Missing and 1 partial ⚠️
...id/ui/woopos/home/totals/WooPosTotalsRepository.kt	0.00%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##              trunk   #13332      +/-   ##
============================================
- Coverage     41.09%   41.09%   -0.01%     
- Complexity     6420     6421       +1     
============================================
  Files          1321     1321              
  Lines         77200    77208       +8     
  Branches      10651    10652       +1     
============================================
+ Hits          31727    31730       +3     
- Misses        42663    42667       +4     
- Partials       2810     2811       +1     

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