Make DirectDB sniff output less noisy

[ernilambar]

Problem

PluginCheck.Security.DirectDB (DirectDBSniff) messages are too long and noisy:

• The full SQL query is embedded in each message.
• Extra context can add multiple lines (assignment traces + full code snippets).

This clutters CI/IDE output and makes real issues harder to scan.

Expected

• Shorter messages: omit or truncate the query; cap/shorten extra context to one line (e.g. variable + line number only).

Affected

• phpcs-sniffs/PluginCheck/Helpers/AbstractEscapingCheckSniff.php