Drop the ignored workspaceId argument from getRepository (#24752)

## What

Second of the three PRs splitting #24745 (after #24747).
`getRepository(workspaceId, entityOrName, options)` declared its first
parameter as `_workspaceId`: the workspace has come from the
AsyncLocalStorage context since the v2 cutover, so the argument did
nothing.

- Remove the parameter from the ORM manager's `getRepository` overloads
and implementation (which also drops the internal `as unknown as` cast
now that the datasource `getRepository` is generic, from #24747).
- Remove the argument from all ~170 call sites.
- Remove the `workspaceId` parameters and argument-type properties that
existed only to feed it. The removal cascades a few levels into private
helpers (chart data, timeline, match-participant, workflow status) and
their callers; every step was compiler-driven.
- Update the three workflow-tool specs that asserted the removed
argument.

## Notes for the guard

This retypes calls inside committed upgrade commands (argument removal
only, no SQL, timestamp, or up/down logic changes), so the PR carries
the `ci:allow-previous-version-upgrade-mutation` label.

## Coming next

Once this merges: merge `twenty-orm-v2/` into `twenty-orm/` and drop the
v2 suffixes.

## Verification

- `tsgo --noEmit` clean, `oxlint --type-aware` clean on the 100 changed
files, `oxfmt --check src/` clean
- Workflow-tool, match-participant, timeline, workflow-status and chart
unit suites pass
- Behavior neutral by construction; `server-integration-test` is the
end-to-end proof


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