feat(jsx-email): update caniemail, support email clients in config files

[shellscape]

Component / Package Name:

jsx-email

This PR contains:

• bugfix
• feature
• refactor
• documentation
• other

Are tests included?

• yes (bugfixes and features will not be merged without tests)
• no

Breaking Changes?

• yes (breaking changes will not be merged unless absolutely necessary)
• no

List any relevant issue numbers:

N/A

Description

Updates caniemail to 2.0.2 and excludes it from the workspace minimumReleaseAge policy so the dependency can be
adopted immediately.

This also updates email check for the newer caniemail API shape by passing typed client globs through
CanIEmailOptions['clients'] and treating issues.warnings as a FeatureMap instead of an optional value.

Adds support for configuring default check clients in jsx-email.config.*:

export const config = defineConfig({
  check: {
    emailClients: ['gmail.*', 'outlook.*']
  }
});

--email-clients still takes precedence when passed on the CLI.

Documentation for the new check.emailClients config option was added to the core config docs.