Re throw the error when the encoding is correct but the import query failed

[sejas]

• Fixes STU-871
• Related to Speedup encoding check by executing it as a fallback on execute_statements #15

Proposed changes

• Pass the error when a query is in UTF-8 format and fails to run the import.

Testing steps

• Apply this change to Studio server files: ~/Library/Application Support/Studio/server-files/sqlite-command/src/Import.php
• Start Studio
• Go to the import tab
• Drag and drop a SQL malformed fake.sql
• Observe the error in Studio

[epeicher]

Thanks @sejas for the prompt fix! I have tested it, and it works as advertised, I can see the validation error as expected. LGTM!