feat: cleanup tables (#14203)

#### PR Dependency Tree


* **PR #14203** 👈

This tree was auto-generated by
[Charcoal](https://github.com/danerwilliams/charcoal)

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit

* **Chores**
* Removed deprecated database tables, enums and schema fields (cleanup
of legacy subscription, invoice, runtime settings and session expiry
data). This includes irreversible data removal for those legacy
elements.
* **Tests**
* Updated tests and test data to align with the cleaned-up schema and
removed fields.

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packages/backend/server/src/__tests__/doc/history.spec.ts

@@ -41,7 +41,6 @@ const snapshot: Snapshot = {
   id: 'doc1',
   blob: Uint8Array.from([1, 0]),
   state: Uint8Array.from([0]),
-  seq: 0,
   size: BigInt(2),
   updatedAt: new Date(),
   createdAt: new Date(),

packages/backend/server/src/__tests__/models/session.spec.ts

@@ -38,7 +38,6 @@ test('should create a new session', async t => {
   const session = await t.context.session.createSession();
   t.truthy(session.id);
   t.truthy(session.createdAt);
-  t.is(session.deprecated_expiresAt, null);
 });
 
 test('should get a exists session', async t => {

packages/backend/server/src/__tests__/utils/feature.ts

@@ -16,7 +16,6 @@ export class WorkspaceResolverMock {
           create: {
             type: WorkspaceRole.Owner,
             userId: user.id,
-            accepted: true,
             status: WorkspaceMemberStatus.Accepted,
           },
         },