Schema validation errors cause unhelpful error

[anyoung-tableau]

Internal conversation: https://salesforce-internal.slack.com/archives/C08QYBH8AE5/p1763062220113849?thread_ts=1763060868.308809&cid=C08QYBH8AE5

The logic around building up a friendly error message for Zodios errors needs another look.

https://github.com/tableau/tableau-mcp/blob/main/src/tools/tool.ts#L245

Ultimately in zod-validation-error, issue.errors is undefined and throws on this line:

https://github.com/causaly/zod-validation-error/blob/4b4f8a78ab0478c1ff81cab626b369b722b07c2f/lib/v4/MessageBuilder.ts#L58