fix(SILVA-576): fixing issue with multipolygon

[paulushcgcj]

Description

Fixed issue when an area returned as a multi polygon instead of a polygon.

Type of change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)

Checklist

• I have read the CONTRIBUTING doc
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have already been accepted and merged

Further comments

---

Thanks for the PR!

Deployments, as required, will be available below:

• Backend
• Frontend

Please create PRs in draft mode. Mark as ready to enable:

• Analysis Workflow

After merge, new images are deployed in:

• Merge Workflow

[jazzgrewal]

neat