chore(api): sync the Fineract OpenAPI spec

[github-actions]

Apache Fineract's OpenAPI spec has changed. This regenerates src/app/api/ from it.

Spec version	1.16.0-SNAPSHOT
Upstream commit	unknown
Image	apache/fineract@sha256:6904ddbbcbb22e30265243bcebe728067944814a115bf40ba4396b6bdb93b4d7
Paths / operations / schemas	595 / 959 / 1474
Run	https://github.com/apache/fineract-backoffice-ui/actions/runs/33357334079

Compile check

❌ npm run build failed.

This is the expected outcome when upstream removes or renames an endpoint, and it
is the reason this PR is worth opening: the errors below are precisely the call
sites that need attention. See the removed operations in the diff.

Build output (last 80 lines)

> fineract-backoffice-ui@1.0.0-rc.1 build
> ng build

 INFO  Removed unused dependencies.
 INFO  Building federation artifacts
 NOTE  Skip packages you don't want to share in your federation config
 INFO  Bundling external npm packages with bundle type 'browser-shared'
✘ [ERROR] TS2724: '"../../../api"' has no exported member named 'FloatingRateRequest'. Did you mean 'FloatingRateCreateRequest'? [plugin angular-compiler]

    src/app/features/products/floating-rates/floating-rate-form.component.ts:24:31:
      24 │ ...{ FloatingRatesService, FloatingRateRequest } from '../../../api';
         ╵                            ~~~~~~~~~~~~~~~~~~~

 ERRR  Error building federation artifacts
 ERRR  Build failed with 1 error:
src/app/features/products/floating-rates/floating-rate-form.component.ts:24:31: ERROR: [plugin: angular-compiler] TS2724: '"../../../api"' has no exported member named 'FloatingRateRequest'. Did you mean 'FloatingRateCreateRequest'?

API surface diff

	added	removed	changed
paths	+1
operations	1	0	12
schemas	5	6

No operations were removed, so no existing call site can break.

Added operations

GET /v1/external-asset-owners/loan-product/template

---

Provenance for this spec is recorded in public/api/fineract.provenance.json.
See DOCS/OPENAPI_GENERATOR.md and
DOCS/adr/0002-automated-fineract-spec-sync.md.

CI may not have run on this PR. Without a SPEC_SYNC_TOKEN secret it is opened
with the default GITHUB_TOKEN, which cannot trigger workflows — so api-client-drift,
build and the rest stay silent. Close and reopen the PR (or push an empty commit) to
run them. The compile check above is a preview, not a substitute.