* fix(build): use inline sourcemaps across all workspace packages

Prevents a Turbopack bug on Windows that caused the SWC worker to
crash when reading external .js.map files in workspace-linked packages
(paths were concatenated with mixed separators like
'packages/serde/dist\\index.js.map'). Once the worker crashed, the
module graph entered a broken state where all subsequent requests
returned 500, manifesting as flaky E2E Windows tests where the
'should rebuild on imported step dependency change' test would time
out waiting for /api/workflows/start to succeed.

Extends the original fix from #352 (previously applied only to
@workflow/core and workflow) to the shared base tsconfig.json so that
all packages producing a dist/ output benefit.

* Potential fix for pull request finding

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>
Signed-off-by: Nathan Rajlich <n@n8.io>

* Tighten changeset description

---------

Signed-off-by: Nathan Rajlich <n@n8.io>
Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>