fix(amazonq): only search for sql strings in java files

[dhasani23]

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)

Description

As an optimization, only search for Strings used to detect Oracle SQL in .java files, since other types of files may be massive and cause contentsToByteArray to overflow.

Checklist

• My code follows the code style of this project
• I have added tests to cover my changes
• A short description of the change has been added to the CHANGELOG if the change is customer-facing in the IDE.
• I have added metrics for my changes (if required)

License

I confirm that my contribution is made under the terms of the Apache 2.0 license.