fix(amazonq): always send latest document on any document change

[andrewyuq]

1. Previously we are using the range() field to send incremental updates, but it appears to be buggy for many edge cases, so remove the range field to send the whole document since IDE always has the latest version.

Screen.Recording.2025-06-10.at.10.35.24.AM.mov

Types of changes

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

Description

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)

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