fix(firebase_firestore): Fixed issue with retrieving data when the app returns to the foreground.

[Iukekini]

Description

Update the Andriod SDK to Version 28.1.0. The updated Andriod Firebase SDK contains a fix that skips backoff when App enters Foreground

Related Issues

Fixed Issue #4305 #4305

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[Iukekini]

@googlebot I signed it!

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[Iukekini]

@googlebot I fixed this

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[tw-tjd]

@googlebot I consent

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[Iukekini]

@googlebot I consent.

[google-cla]

All (the pull request submitter and all commit authors) CLAs are signed, but one or more commits were authored or co-authored by someone other than the pull request submitter.

We need to confirm that all authors are ok with their commits being contributed to this project. Please have them confirm that by leaving a comment that contains only @googlebot I consent. in this pull request.

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[tw-tjd]

@googlebot I consent.