Handle errors when rendering the PreviewTable

[ericpgreen2]

Previously, we weren't handling errors when rendering a Preview Table. This became apparent when a ClickHouse table contained some invalid UTF-8 strings. This PR shows an error message in these circumstances.

Closes #4542

Before:

After:

[ericpgreen2]

Code Review Agent Run Status

• AI Based Review: Successful

Code Review Overview

• Summary: The PR introduces error handling for rendering the PreviewTable in scenarios where invalid UTF-8 strings are encountered in a ClickHouse table. It adds a new component, WorkspaceError, across multiple Svelte files to display error messages effectively. This change enhances user experience by providing clearer error messages instead of failing silently or showing corrupted data.
• Code change type: Feature Addition, UI/UX Improvement
• Unit tests added: False
• Estimated effort to review (1-5, lower is better): 2 - The changes are straightforward and localized but need to verify the integration across different components.

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The Bito AI Code Review Agent successfully reviewed 5 files and discovered no issues.

High-level Feedback

Overall, the PR effectively addresses the issue of handling rendering errors due to invalid UTF-8 strings. It maintains consistency in user experience by introducing a dedicated error component. However, the absence of unit tests for the new error handling logic is a notable omission. Including tests would ensure reliability and catch potential edge cases.