[web] Remove redundant monthlyTimesTwelve from pricing tables (#35506)

* [web] Remove redundant monthlyTimesTwelve from pricing tables

monthlyTimesTwelve was always exactly monthly * 12 in every pricing row,
and the value was only ever used to render the "billed monthly for a year"
strikethrough price in the compile-timeout paywall.

- Drop the stored field from the pricing tables
- Send raw monthly/annual numbers in ol-standardPlanPricing instead of
  pre-formatted strings
- Format the prices (and derive the strikethrough as monthly * 12) in the
  paywall modal via the frontend currency helper

No user-facing change: the displayed prices are identical.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

* Remove `monthlyTimesTwelve` from script

* Remove comments

---------

Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>
GitOrigin-RevId: b637208540b3b96180b1a3cc4417b09944c5d158

services/web/test/unit/src/Project/ProjectController.test.mjs

@@ -44,7 +44,6 @@ describe('ProjectController', function () {
             monthly: 15,
             annual: 180,
             annualDividedByTwelve: 15,
-            monthlyTimesTwelve: 180,
           },
         },
       },