On-ramp: add params validation to useSDKMethod hook

[wachunei]

Development & PR Process

1. Follow MetaMask Mobile Coding Standards
2. Add release-xx label to identify the PR slated for a upcoming release (will be used in release discussion)
3. Add needs-dev-review label when work is completed
4. Add needs-qa label when dev review is completed
5. Add QA Passed label when QA has signed off

Description

This PR uses upgrades the on-ramp-sdk to v1.20.0 and uses the new SDK.getSignature method to retrieve an array that indicates if each parameter of a method is required or optional.

This allows to enforce required parameters to not be null or undefined. In case a required parameter is not valid, the method call will not happen.

QA Steps
Buy flow should be completed without any changes compared to previous version

Screenshots/Recordings

If applicable, add screenshots and/or recordings to visualize the before and after of your change

Issue

Progresses #???

Checklist

• There is a related GitHub issue
• Tests are included if applicable
• Any added code is fully documented

[socket-security]

No dependency changes detected. Learn more about Socket for GitHub ↗︎

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👍 No dependency changes detected in pull request

Pull request alert summary

Issue	Status
Critical CVE	✅ 0 issues
CVE	✅ 0 issues
Mild CVE	✅ 0 issues
Install scripts	✅ 0 issues
Native code	✅ 0 issues
Bin script confusion	✅ 0 issues
Bin script shell injection	✅ 0 issues
Filesystem access	✅ 0 issues
Network access	✅ 0 issues
Shell access	✅ 0 issues
Unresolved require	✅ 0 issues
Invalid package.json	✅ 0 issues
HTTP dependency	✅ 0 issues
Git dependency	✅ 0 issues
GitHub dependency	✅ 0 issues
No bug tracker	✅ 0 issues
No contributors or author data	✅ 0 issues
No README	✅ 0 issues
Deprecated	✅ 0 issues
New author	✅ 0 issues
Unstable ownership	✅ 0 issues
Non-existent author	✅ 0 issues
Unmaintained	✅ 0 issues
Unpublished package	✅ 0 issues
Potential typo squat	✅ 0 issues
Known Malware	✅ 0 issues
Telemetry	✅ 0 issues
Protestware/Troll package	✅ 0 issues
AI detected security risk	✅ 0 issues
AI warning	✅ 0 issues

[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

0.0% Coverage
0.0% Duplication

[bkirb]

I verified the buying flow on this branch