Email Settings: add modal to confirm pausing emails

[eoigal]

Fixes https://github.com/Automattic/loop/issues/373

Proposed Changes

• This will show a confirmation modal if the user has subscriptions and they choose to pause emails

Why are these changes being made?

Testing Instructions

• Apply this PR locally
• Create a test account - follow/subscribe to no sites
• Go to http://calypso.localhost:3000/me/notifications/subscriptions
• Check the Pause Emails setting - confirm you don't see any confirmation modal when saving settings
• Return to /reader and subscribe to some sites
• Go to http://calypso.localhost:3000/me/notifications/subscriptions again
• Check the Pause Emails setting - confirm you do see a confirmation modal when saving settings

Pre-merge Checklist

• Has the general commit checklist been followed? (PCYsg-hS-p2)
• Have you written new tests for your changes?
• Have you tested the feature in Simple (P9HQHe-k8-p2), Atomic (P9HQHe-jW-p2), and self-hosted Jetpack sites (PCYsg-g6b-p2)?
• Have you checked for TypeScript, React or other console errors?
• Have you used memoizing on expensive computations? More info in Memoizing with create-selector and Using memoizing selectors and Our Approach to Data
• Have we added the "[Status] String Freeze" label as soon as any new strings were ready for translation (p4TIVU-5Jq-p2)?
  • For UI changes, have we tested the change in various languages (for example, ES, PT, FR, or DE)? The length of text and words vary significantly between languages.
• For changes affecting Jetpack: Have we added the "[Status] Needs Privacy Updates" label if this pull request changes what data or activity we track or use (p4TIVU-aUh-p2)?

[github-actions]

Calypso Live (direct link)

https://calypso.live?image=registry.a8c.com/calypso/app:build-139042

Jetpack Cloud live (direct link)

https://calypso.live?image=registry.a8c.com/calypso/app:build-139042&env=jetpack

Automattic for Agencies live (direct link)

https://calypso.live?image=registry.a8c.com/calypso/app:build-139042&env=a8c-for-agencies

[matticbot]

Here is how your PR affects size of JS and CSS bundles shipped to the user's browser:

App Entrypoints (~15 bytes added 📈 [gzipped])

Details

name        parsed_size           gzip_size
entry-main        +41 B  (+0.0%)      +15 B  (+0.0%)

Common code that is always downloaded and parsed every time the app is loaded, no matter which route is used.

Sections (~1207 bytes added 📈 [gzipped])

Details

name                   parsed_size           gzip_size
notification-settings     +35550 B  (+5.1%)    +7322 B  (+3.6%)
reader                      +191 B  (+0.0%)      -13 B  (-0.0%)
security                    -103 B  (-0.0%)       -7 B  (-0.0%)

Sections contain code specific for a given set of routes. Is downloaded and parsed only when a particular route is navigated to.

Legend

What is parsed and gzip size?

Parsed Size: Uncompressed size of the JS and CSS files. This much code needs to be parsed and stored in memory.
Gzip Size: Compressed size of the JS and CSS files. This much data needs to be downloaded over network.

Generated by performance advisor bot at iscalypsofastyet.com.

[matticbot]

This PR modifies the release build for the following Calypso Apps:

For info about this notification, see here: PCYsg-OT6-p2

• help-center
• notifications
• wpcom-block-editor

To test WordPress.com changes, run install-plugin.sh $pluginSlug update/notification-settings on your sandbox.

[spsiddarthan]

LGTM

[a8ci18n]

This Pull Request is now available for translation here: https://translate.wordpress.com/deliverables/17326926

Some locales (Hebrew) have been temporarily machine-translated due to translator availability. All other translations are usually ready within a few days. Untranslated and machine-translated strings will be sent for translation next Monday and are expected to be completed by the following Friday.

Thank you @eoigal for including a screenshot in the description! This is really helpful for our translators.

[a8ci18n]

Translation for this Pull Request has now been finished.