infosync, types: Truncate float for TiFlash replica progress

[birdstorm]

What problem does this PR solve?

Issue Number: close #24298

Problem Summary:

What is changed and how it works?

What's Changed:

Add a truncate float API so that the replica progress will not be rounded to 1 when it actually isn't.

How it Works:

Truncate the progress result to 2 digits after the decimal point.

Related changes

• Need to cherry-pick to the release branch

Check List

Tests

• Unit test

Release note

• No release note

[solotzg]

@crazycs520 PTAL

[crazycs520]

/lgtm

[crazycs520]

@AilinKid PTAL

[AilinKid]

/lgtm

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• AilinKid
• crazycs520

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[AilinKid]

/merge

[ti-chi-bot]

This pull request has been accepted and is ready to merge.

Commit hash: 04a1720

[ti-chi-bot]

@birdstorm: Your PR was out of date, I have automatically updated it for you.

At the same time I will also trigger all tests for you:

/run-all-tests

If the CI test fails, you just re-trigger the test that failed and the bot will merge the PR for you after the CI passes.

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the ti-community-infra/tichi repository.

[solotzg]

/merge