Please add smart chain BNB and BUSD BEP 20 available by default

#Description
As a (persona), I want to (some goal), so that (some reason)

#Situation
**GIVEN:** _the beginning state of the scenario_
**WHEN:** _a specific action that the user takes_
**THEN:** _a testable outcome, usually caused by the action in When_

**Acceptance Criteria**
_What is a technical must-have for launch and in-scope._

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**Process** (adapt per story)
- [ ] User research / data
- [ ] Ideation / Kickoff in cross-functional team
- [ ] Pattern research in mobile (crypto / non-crypto space)
- [ ] Proof of concept to check technical feasibility (if applicable)
- [ ] Design reviews with PM, Engineer(s)
- [ ] User testing
- [ ] Design - Dev handoff
- [ ] Implementation
- [ ] Code review
- [ ] Stakeholder review on latest build on iOS and Android
- [ ] QA - unit test, e2e tests, regression testing

The issue contains only an unfilled story template and names no files, tests, or entry points. Start by locating the repository's existing default network and token configuration, then inspect related tests. Done means BNB and BUSD on BEP-20 are available by default without breaking existing defaults.

Written by the indexing model from the issue text.