Added e2e tests for page.deleted webhook

[RobinCsl]

Contributes to this issue: #15537

Got some code for us? Awesome 🎊!

Please include a description of your change & check your PR against this list, thanks!

• There's a clear use-case for this code change, explained below
• Commit message has a short title & references relevant issues
• The build will pass (run yarn test:all and yarn lint)

We appreciate your contribution!

Also, if you'd be interested in writing code like this for us more regularly, we're hiring:
https://careers.ghost.org

[codecov]

Codecov Report

Base: 53.42% // Head: 53.40% // Decreases project coverage by -0.02% ⚠️

Coverage data is based on head (8d46ab0) compared to base (2d2ac01).
Patch has no changes to coverable lines.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #15723      +/-   ##
==========================================
- Coverage   53.42%   53.40%   -0.03%     
==========================================
  Files        1502     1502              
  Lines       97925    97925              
  Branches    10979    10976       -3     
==========================================
- Hits        52319    52295      -24     
- Misses      44348    44371      +23     
- Partials     1258     1259       +1     

Impacted Files	Coverage Δ
ghost/admin/app/helpers/gh-price-amount.js	44.44% <0.00%> (-22.23%)	⬇️
ghost/data-generator/lib/tables/subscriptions.js	89.06% <0.00%> (-10.94%)	⬇️
...tor/lib/tables/members-paid-subscription-events.js	89.74% <0.00%> (-10.26%)	⬇️
.../data-generator/lib/tables/members-login-events.js	90.69% <0.00%> (-9.31%)	⬇️
...a-generator/lib/tables/members-subscribe-events.js	94.23% <0.00%> (-5.77%)	⬇️
...b/tables/members-stripe-customers-subscriptions.js	95.83% <0.00%> (-4.17%)	⬇️
ghost/data-generator/lib/tables/members.js	98.46% <0.00%> (-1.54%)	⬇️
ghost/admin/app/controllers/offer.js	41.57% <0.00%> (-0.53%)	⬇️

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.

☔ View full report at Codecov.
📢 Do you have feedback about the report comment? Let us know in this issue.

[naz]

Thanks for yet another great contribution @RobinCsl 🙌 These changes are good and do the job intended.

I think we'll need to establish a cleaner "matcher building" pattern in the future, but that's a change for another PR. Would appreciate your ideas and another PR if you have time to tackle it!

[ErisDS]

@RobinCsl thanks so much for this PR, it's now been merged - I added the hactoberfest-accepted label a few days ago so that it should have counted.

I think we actually have a PR merged or open for every single webhook now, incredible! Thank you for helping 🙏 I hope you'll stick around!