Search query syntax check confuses quoted "not" with operator

[kroepke]

Expected Behavior

Quoted strings should not trigger the "wrong capitalization of boolean operator" warning.

Current Behavior

Possible Solution

Improve parser

Steps to Reproduce (for bugs)

1. Add some quoted text containing an "and", "not" etc
2. Submit the query
3. Observe the warning

Context

Misleading warning message.

Your Environment

• Graylog Version: 4.3.7