[Auth] Fix promise rejection for failing when loading JS

[sam-gc]

Fixes #5141
Now the promise will reject with an error instead of the result of onerror.

[changeset-bot]

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Latest commit: 7db1889

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[github-actions]

Changeset File Check ⚠️

• Changeset formatting error in following file:

  Package "firebase-compat-typings-test" must depend on the current version of "firebase-exp": "9.0.0-beta.6" vs "file:../../packages-exp/firebase-exp"
  Package "firebase-compat-typings-test" must depend on the current version of "firebase-exp": "9.0.0-beta.6" vs "file:../../packages-exp/firebase-exp"
  Package "firebase-compat-typings-test" must depend on the current version of "firebase-exp": "9.0.0-beta.6" vs "file:../../packages-exp/firebase-exp"
  Some packages have been changed but no changesets were found. Run `changeset add` to resolve this error.
  If this change doesn't need a release, run `changeset add --empty`.
  

[google-oss-bot]

Binary Size Report

Affected SDKs

No changes between base commit (aeab9ce) and head commit (43a98fa).

Test Logs

• Base (aeab9cef): https://github.com/firebase/firebase-js-sdk/actions/runs/1023652459
• Head (43a98fa4): https://github.com/firebase/firebase-js-sdk/actions/runs/1027079743

[google-oss-bot]

Size Analysis Report

Affected Products

• @firebase/auth-exp

  • RecaptchaVerifier

    Size Table

    Type	Base (aeab9ce)	Head (43a98fa)	Diff
    size	35.8 kB	35.8 kB	+51 B (+0.1%)
    size-with-ext-deps	47.7 kB	47.7 kB	+52 B (+0.1%)

  • getAuth

    Size Table

    Type	Base (aeab9ce)	Head (43a98fa)	Diff
    size	60.8 kB	60.9 kB	+51 B (+0.1%)
    size-with-ext-deps	73.0 kB	73.1 kB	+52 B (+0.1%)

  • browserPopupRedirectResolver

    Size Table

    Type	Base (aeab9ce)	Head (43a98fa)	Diff
    size	53.2 kB	53.3 kB	+51 B (+0.1%)
    size-with-ext-deps	65.3 kB	65.4 kB	+52 B (+0.1%)

Test Logs

• Base (aeab9ce): https://github.com/firebase/firebase-js-sdk/actions/runs/1023652459
• Head (43a98fa): https://github.com/firebase/firebase-js-sdk/actions/runs/1027079743