fix: fix some errors found while testing the new sdk release and bump sdk to latest version

[martin-trajanovski]

Description

Fix errors in dataset property access by removing unnecessary string indexing and update to use dot notation. Bump @scicatproject/scicat-sdk-ts dependency to version 4.8.3.

Bug Fixes:

• Fix errors in dataset property access by removing unnecessary string indexing.

Enhancements:

• Update dataset property access to use dot notation for improved readability.

Build:

• Bump @scicatproject/scicat-sdk-ts dependency to version 4.8.3 in package.json.

Fixes:

Please provide a list of the fixes implemented in this PR

• Issues found while testing in dev environment

[sourcery-ai]

Hey @martin-trajanovski - I've reviewed your changes - here's some feedback:

Overall Comments:

• Please provide more specific details about the issues that were found during testing in the dev environment. This helps with tracking and understanding the history of changes.

Here's what I looked at during the review

• 🟢 General issues: all looks good
• 🟢 Security: all looks good
• 🟢 Testing: all looks good
• 🟢 Complexity: all looks good
• 🟢 Documentation: all looks good

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