Emailer: update email + output

[andyyanggov]

Continues where #19271 left off, updating the templates based on business feedback.

See also #22363.

UI Designs: Design ticket: https://app.zenhub.com/workspaces/design-team-space-new-655bd9f095d1aa3852dd86af/issues/gh/bcgov/entity/22223 Figma: https://www.figma.com/board/q8xFNQ1kAPQ3RGXXJaAlQw/Continuation-Application-Workflow?node-id=0-1&t=xusYCCkdiHpsfopf-0 Figma: https://www.figma.com/design/Tl8uDClgM5NAozzMltfiMD/Entities-Emails?node-id=2556-14&t=Lj14aw7p8ptjsXPF-0 Templates: https://docs.google.com/spreadsheets/d/17wMY9znmWMr2RoXH9S2elffC8uE7iifUGB5Hu3VVFpE/edit?gid=0#gid=0 (line 57)

• [x] Update content for Pending Staff Review email.
• [x] Add "- Pending" to application attachment name.
• [ ] ~Update unit tests.~ none were broken

[severinbeauvais]

From Figma:

[severinbeauvais]

Test Notes

This tickets affects only the "pending staff review" email (which is received after paying for the continuation application).

There are 2 flavours of emails: one if the business was an extrapro (ie, has an Axxx number), and the other without. See samples below.

Screenshot of email content for exprapro continuation in (note Axxx number):

Screenshot of email content for manually enterered continuation in:

PS I passed a sample to Janis and she said it looks good to her.