[bundle-size][auth] Refine bundle definition

[yifanyang]

No description provided.

[changeset-bot]

⚠️ No Changeset found

Latest commit: 950c79b

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.

This PR includes no changesets

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[google-oss-bot]

Binary Size Report

Affected SDKs

• bundle

  Type	Base (086df7c)	Head (204500e)	Diff
  auth (GoogleFBTwitterGitHubPopup)	80.7 kB	80.7 kB	-35 B (-0.0%)

Test Logs

• Base (086df7c7): https://github.com/firebase/firebase-js-sdk/actions/runs/1491855305
• Head (204500ef): https://github.com/firebase/firebase-js-sdk/actions/runs/1518635947

[google-oss-bot]

Size Analysis Report

Affected Products

No changes between base commit (086df7c) and head commit (204500e).

Test Logs

• Base (086df7c): https://github.com/firebase/firebase-js-sdk/actions/runs/1491855305
• Head (204500e): https://github.com/firebase/firebase-js-sdk/actions/runs/1518635947

[yifanyang]

@Feiyang1 @hsubox76

Can I get one more approve from you to merge this pull request?