feat(storage-resize-image): add param for backfill batch size

[CorieW]

Resolves #2476

• Tested

[cabljac]

lgtm

[Copilot]

Pull Request Overview

This PR adds a configurable parameter for the backfill batch size in the storage-resize-images extension, allowing users to customize how many images are processed in a single batch during backfill operations instead of being limited to the hardcoded value of 3.

• Adds a new BACKFILL_BATCH_SIZE parameter with a default value of 3
• Replaces the hardcoded batch size with the configurable parameter in the backfill function
• Updates documentation and configuration files to reflect the new parameter

Reviewed Changes

Copilot reviewed 8 out of 8 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
storage-resize-images/functions/src/index.ts	Replaces hardcoded maxResults value with configurable backfillBatchSize
storage-resize-images/functions/src/config.ts	Adds backfillBatchSize configuration parameter with default value of 3
storage-resize-images/functions/tests/function.test.ts	Updates test mock to include backfillBatchSize parameter
storage-resize-images/functions/tests/filters.test.ts	Updates test mock to include backfillBatchSize parameter
storage-resize-images/functions/tests/snapshots/config.test.ts.snap	Updates snapshot to include backfillBatchSize in configuration
storage-resize-images/extension.yaml	Adds parameter definition and bumps version to 0.2.10
storage-resize-images/README.md	Documents the new backfill batch size parameter
storage-resize-images/CHANGELOG.md	Records the feature addition in version 0.2.10