VinF Hybrid Inference #0: add dom-chromium-ai dep

[erikeldridge]

Problem Statement

#8874 (comment) asks why we need to add "dom" to the posttinstall script's tsconfig. The reason is because adding the @types/dom-chromium-ai to vertex causes the postinstall script to fail with errors like:

~/firebase-js-sdk $ yarn                                                                                   
...
[5/5] 🔨  Building fresh packages...
$ patch-package && yarn --cwd repo-scripts/changelog-generator build
patch-package 7.0.2
Applying patches...
[email protected] ✔
yarn run v1.22.22
$ tsc
../../node_modules/@types/dom-chromium-ai/index.d.ts:20:29 - error TS2304: Cannot find name 'AddEventListenerOptions'.

20         options?: boolean | AddEventListenerOptions,
                               ~~~~~~~~~~~~~~~~~~~~~~~

If this passes in CI, that'll be a clue for how to proceed.

Repro Steps

1. Create branch based on integration branch
2. Run git clean -fdx from repo root
3. Run yarn and observe success
4. cd into packages/vertexai
5. Install AI types: yarn add -D @types/dom-chromium-ai
6. cd back into repo root
7. Run yarn and observe error
8. Add "dom" lib to changelog script's tsconfig
9. Run yarn from root and yarn test from vertex dir and observe success

[changeset-bot]

⚠️ No Changeset found

Latest commit: 6ee7431

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

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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: v8.0

[google-oss-bot]

Size Report ¹

Affected Products

No changes between base commit (dcc62c0) and merge commit (9445049).

Test Logs

• Base (dcc62c0): https://github.com/firebase/firebase-js-sdk/actions/runs/14113941248
• Merge (9445049): https://github.com/firebase/firebase-js-sdk/actions/runs/14367111299

1. https://storage.googleapis.com/firebase-sdk-metric-reports/SqY2cctlNh.html

[google-oss-bot]

Size Analysis Report ¹

Affected Products

No changes between base commit (dcc62c0) and merge commit (9445049).

Test Logs

• Base (dcc62c0): https://github.com/firebase/firebase-js-sdk/actions/runs/14113941248
• Merge (9445049): https://github.com/firebase/firebase-js-sdk/actions/runs/14367111299

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

[erikeldridge]

#8920 adds this dep in a better way.