Fix: remove the default "false" value for ENABLE_EMBEDDED_WALLETS (#1049)

### What

1. `matrix.ENABLE_EMBEDDED_WALLETS` default value "false" is a non-empty
string, prevents docker compose defaults to kicks in
2. update`run_embedded_wallet_test.sh` and `changelog`

### Why

Integration tests failed due to "embedded wallets feature is disabled"

https://github.com/stellar/stellar-disbursement-platform-backend/actions/runs/21842255128/job/63036397368

### Known limitations

N/A

### Checklist

- [x] Title follows `SDP-1234: Add new feature` or `Chore: Refactor
package xyz` format. The Jira ticket code was included if available.
- [ ] PR has a focused scope and doesn't mix features with refactoring
- [ ] Tests are included (if applicable)
- [x] `CHANGELOG.md` is updated (if applicable)
- [ ] If contracts changed, run the `Contract WASM Artifacts` workflow
and open a PR to update the WASMs on `dev`
- [ ] CONFIG/SECRETS changes are updated in helmcharts and deployments
(if applicable)
- [ ] Preview deployment works as expected
- [ ] Ready for production

Author: JiahuiWho

.github/workflows/e2e_integration_test.yml

@@ -98,7 +98,7 @@ jobs:
       HORIZON_URL: ${{ matrix.HORIZON_URL }}
       CIRCLE_API_TYPE: ${{ matrix.CIRCLE_API_TYPE || 'TRANSFERS' }}
       RPC_URL: ${{ matrix.RPC_URL }}
-      ENABLE_EMBEDDED_WALLETS: ${{ matrix.ENABLE_EMBEDDED_WALLETS || 'false' }}
+      ENABLE_EMBEDDED_WALLETS: ${{ matrix.ENABLE_EMBEDDED_WALLETS}}
       EMBEDDED_WALLETS_WASM_HASH: ${{ matrix.EMBEDDED_WALLETS_WASM_HASH }}
       TEST_TYPE: ${{ matrix.TEST_TYPE }}
     steps:

CHANGELOG.md

@@ -4,6 +4,12 @@ All notable changes to this project will be documented in this file.
 
 The format is based on [Keep a Changelog](https://keepachangelog.com/).
 
+## [Unreleased]
+
+### Added
+
+- Add integration tests for embedded wallets. [1041](https://github.com/stellar/stellar-disbursement-platform-backend/pull/1041)
+
 ## [6.1.0](https://github.com/stellar/stellar-disbursement-platform-backend/releases/tag/6.1.0) ([diff](https://github.com/stellar/stellar-disbursement-platform-backend/compare/6.0.1...6.1.0))
 
 ### Fixed

internal/integrationtests/run_embedded_wallet_test.sh

@@ -20,6 +20,8 @@ export USER_EMAIL="integration-test-user@stellar.local"
 export USER_PASSWORD="Password123!"
 export ENABLE_EMBEDDED_WALLETS="true"
 export TEST_TYPE="embedded-wallet"
+export RPC_URL="${RPC_URL:-https://soroban-testnet.stellar.org}"
+export EMBEDDED_WALLETS_WASM_HASH="${EMBEDDED_WALLETS_WASM_HASH:-9b784817dff1620a3e2b223fe1eb8dac56e18980dea9726f692847ccbbd3a853}"
 
 # Cleanup
 echo "====> Step 1: Cleanup"