Feature: Streamline the onboarding flow

[joemcgill]

Changes proposed in this Pull Request:

Closes #2458.

This feature branch includes the following issues:

• Onboarding: Hide WP.com connection card if already connected #2487
• Onboarding: Default stores to destination-based tax rates during onboarding #2491
• Onboarding: Remove Tax Rates Selection UI #2490
• Onboarding: Remove Language Setting UI #2489
• Onboarding: Remove Pre-Launch checklist UI #2492
• Onboarding: Move FAQs below the CTA button #2488
• Onboarding: Clean up settings API for pre-launch checklist items #2494

This feature branch incudes changes from the following pull requests:

• Streamline onboarding: Hide WordPress.com account connection setting from the onboarding if already connected #2516
• Streamline onboarding: Update E2E tests for the conditionally hidden WordPress.com account connection setting #2521
• Streamline onboarding: Remove the language setting #2522
• Streamline onboarding: Move FAQs to the bottom of pages #2531
• Streamline onboarding: Remove the pre-launch checklist #2532
• Streamline onboarding: Conditionally hide the tax setting #2542
• Streamline onboarding: Set the default value of the tax rate to destination-based #2543
• Streamline onboarding: Clean up the access to the pre-launch checklist in the mc/settings API #2555

[codecov]

Codecov Report

Attention: Patch coverage is 40.00000% with 18 lines in your changes missing coverage. Please review.

Project coverage is 65.3%. Comparing base (2c82458) to head (ffd0de5).
Report is 87 commits behind head on feature/2458-2459-2460-2509.

Files with missing lines	Patch %	Lines
...src/components/paid-ads/asset-group/asset-group.js	0.0%	12 Missing ⚠️
.../free-listings/setup-free-listings/form-content.js	0.0%	1 Missing and 1 partial ⚠️
...c/components/stepper/step-content-actions/index.js	33.3%	1 Missing and 1 partial ⚠️
...ponents/free-listings/setup-free-listings/index.js	50.0%	1 Missing ⚠️
.../src/components/paid-ads/asset-group/faqs-panel.js	50.0%	1 Missing ⚠️

Additional details and impacted files

@@                       Coverage Diff                       @@
##             feature/2458-2459-2460-2509   #2631     +/-   ##
===============================================================
+ Coverage                           64.9%   65.3%   +0.4%     
+ Complexity                          4596    4589      -7     
===============================================================
  Files                                793     792      -1     
  Lines                              24342   24254     -88     
  Branches                            1231    1233      +2     
===============================================================
+ Hits                               15790   15833     +43     
+ Misses                              8379    8247    -132     
- Partials                             173     174      +1     

Flag	Coverage Δ
js-unit-tests	62.7% <28.0%> (-<0.1%)	⬇️
php-unit-tests	66.0% <100.0%> (+0.5%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
...choose-audience-section/choose-audience-section.js	33.3% <ø> (+8.3%)	⬆️
...listings/configure-product-listings/checkErrors.js	100.0% <100.0%> (ø)
js/src/components/paid-ads/ads-campaign.js	0.0% <ø> (ø)
js/src/components/paid-ads/faqs-panel.js	66.7% <100.0%> (ø)
...rc/components/stepper/step-content-footer/index.js	50.0% <100.0%> (+16.7%)	⬆️
js/src/components/vertical-gap-layout/index.js	100.0% <ø> (ø)
js/src/data/action-types.js	100.0% <ø> (ø)
js/src/data/actions.js	7.9% <ø> (ø)
js/src/data/reducer.js	83.5% <ø> (-0.3%)	⬇️
js/src/data/resolvers.js	7.6% <ø> (+0.2%)	⬆️
... and 9 more

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• Flaky Tests Detection - Detect and resolve failed and flaky tests
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[mikkamp]

Just wanted to clarify that the failing unit test has already been resolved in PR #2626

We can ignore that here (no need to merge the latest changes into this branch).