Move feature rate limiters to shared web folder (#31855)

* feat: remove old assist split test

* feat: moving featue rate limiters to main shared directory for use in multiple modules

* feat: base workbench rate limiter on a token specific base class

* feat: rename aiErrorAssistRateLimiter to AiFeatureUsageRateLimiter to better reflect its for our shared ai usage quota

GitOrigin-RevId: 89464d115b5904f6274756a7169e2b35945e2fc9

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

@@ -230,6 +230,12 @@ describe('ProjectController', function () {
       promises: { hooks: { fire: sinon.stub().resolves() } },
     }
 
+    ctx.AiFeatureUsageRateLimiter = {
+      getRemainingFeatureUses: sinon.stub().resolves({
+        aiFeatureUsage: { remainingUsage: 0 },
+      }),
+    }
+
     vi.doMock('mongodb-legacy', () => ({
       default: { ObjectId },
     }))
@@ -485,6 +491,13 @@ describe('ProjectController', function () {
       default: ctx.Modules,
     }))
 
+    vi.doMock(
+      '../../../../app/src/infrastructure/rate-limiters/AiFeatureUsageRateLimiter',
+      () => ({
+        default: ctx.AiFeatureUsageRateLimiter,
+      })
+    )
+
     ctx.ProjectController = (await import(MODULE_PATH)).default
 
     ctx.projectName = '£12321jkj9ujkljds'