Update e2e tests to reflect AI package and new API

[hsubox76]

Currently uses VertexAIBackend because the GoogleAIBackend isn't public yet.

[changeset-bot]

⚠️ No Changeset found

Latest commit: 862866e

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[github-actions]

Vertex AI Mock Responses Check ⚠️

A newer major version of the mock responses for Vertex AI unit tests is available. update_vertexai_responses.sh should be updated to clone the latest version of the responses: v13.0

[google-oss-bot]

Size Report ¹

Affected Products

No changes between base commit (39505cc) and merge commit (c266dc3).

Test Logs

• Base (39505cc): https://github.com/firebase/firebase-js-sdk/actions/runs/14982419248
• Merge (c266dc3): https://github.com/firebase/firebase-js-sdk/actions/runs/14983619212

1. https://storage.googleapis.com/firebase-sdk-metric-reports/qUHTdlHMzC.html

[google-oss-bot]

Size Analysis Report ¹

Affected Products

No changes between base commit (39505cc) and merge commit (c266dc3).

Test Logs

• Base (39505cc): https://github.com/firebase/firebase-js-sdk/actions/runs/14982419248
• Merge (c266dc3): https://github.com/firebase/firebase-js-sdk/actions/runs/14983619212

1. https://storage.googleapis.com/firebase-sdk-metric-reports/FiywqF18m9.html