fix: handle undefined process for browser builds

[edmulraney]

Why?

The Fleek SDK browser build tries to access the process global variable and fails. It shouldn't assume the consumer has pollyfilled node as the consumer is a browser platform.

How?

• Done: check process is defined before accessing it

Contribution checklist?

• The commit messages are detailed
• The build command runs locally
• Assets or static content are linked and stored in the project
• You have manually tested
• You have provided tests

Security checklist?

• Sensitive data has been identified and is being protected properly
• Injection has been prevented (parameterized queries, no eval or system calls)

[changeset-bot]

🦋 Changeset detected

Latest commit: 7ab8f79

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@fleek-platform/sdk	Patch

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