[CIAB:POS] Set View Order as primary action in overflow menu

[kidinov]

Closes: WOOMOB-2292

Description

The order and booking detail screens had duplicate overflow menu implementations. This PR extracts a shared WooPosOverflowMenu component and sets "View Order" as the primary action (displayed as a button outside the overflow) in booking details.

Also cleaned up the API by combining two separate nullable parameters (primaryActionLabel + onPrimaryActionClick) into a single nullable WooPosOverflowPrimaryAction data class.

Testing instructions

1. Open POS and complete a booking order
2. Open booking details - verify "View Order" appears as a button (primary action) and other actions are in the overflow menu
3. Open a regular order details - verify the primary action button and overflow menu still work
4. Tap each menu item and verify it dismisses the dropdown and triggers the correct action

02-20--14-36.mp4

[dangermattic]

	1 Warning
⚠️	This PR is larger than 300 lines of changes. Please consider splitting it into smaller PRs for easier and faster reviews.

Generated by 🚫 Danger

[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
	Build Number	727
	Version	24.1-rc-3
	Application ID	com.woocommerce.android.prealpha
	Commit	dc579a2
	Installation URL	4cq2mnfur9goo

Automatticians: You can use our internal self-serve MC tool to give yourself access to those builds if needed.

[codecov-commenter]

Codecov Report

❌ Patch coverage is 0% with 114 lines in your changes missing coverage. Please review.
✅ Project coverage is 39.30%. Comparing base (61bc1a8) to head (dc579a2).
⚠️ Report is 16 commits behind head on trunk.

Files with missing lines	Patch %	Lines
...s/common/composeui/component/WooPosOverflowMenu.kt	0.00%	56 Missing ⚠️
...ui/woopos/bookings/details/WooPosBookingDetails.kt	0.00%	35 Missing ⚠️
...oid/ui/woopos/orders/details/WooPosOrderDetails.kt	0.00%	23 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##              trunk   #15406      +/-   ##
============================================
- Coverage     39.30%   39.30%   -0.01%     
- Complexity    10982    10983       +1     
============================================
  Files          2239     2240       +1     
  Lines        127602   127608       +6     
  Branches      17820    17826       +6     
============================================
  Hits          50158    50158              
- Misses        72322    72328       +6     
  Partials       5122     5122              

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