chore: upstream stf to main (#20286)

Co-authored-by: testinginprod <98415576+testinginprod@users.noreply.github.com>

.github/workflows/v2-test.yml

@@ -0,0 +1,39 @@
+name: v2 core Tests 
+on:
+  pull_request:
+  merge_group:
+  push:
+    branches:
+      - main
+
+permissions:
+  contents: read
+
+concurrency:
+  group: ci-${{ github.ref }}-v2-tests
+  cancel-in-progress: true
+
+jobs:
+  stf:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-go@v5
+        with:
+          go-version: "1.22"
+          check-latest: true
+          cache: true
+          cache-dependency-path: go.sum
+      - uses: technote-space/get-diff-action@v6.1.2
+        id: git_diff
+        with:
+          PATTERNS: |
+            server/v2/stf/**/*.go
+            server/v2/stf/go.mod
+            server/v2/stf/go.sum
+      - name: test & coverage report creation
+        if: env.GIT_DIFF
+        run: |
+          cd server/v2/stf && go test -mod=readonly -race -timeout 30m -covermode=atomic -tags='ledger test_ledger_mock'