Change "∞" symbol with "100%" on stats

[irfano]

Fixes #17314

This changes "∞" symbol with "100%" on stats. The issue description states removing "∞" symbol but this PR changes it to "%100" and matches this behavior with the web.

before	after

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To Test:

1. Log in.
2. Open "My Site → Stats"
3. Select the INSIGHTS tab.
4. Select a date that has 0 views for the previous date on Views & Visitors card.
5. Verify that the data shows "%100" instead of "∞".
6. Repeat the same test for total cards.
7. Repeat the same test for the Overview card on granular tabs.

---

Regression Notes

1. Potential unintended areas of impact

   • None

2. What I did to test those areas of impact (or what existing automated tests I relied on)

   • N/A

3. What automated tests I added (or what prevented me from doing so)

   • Updated StatsUtilsTest.

---

PR Submission Checklist:

• I have completed the Regression Notes.
• I have considered adding accessibility improvements for my changes.
• I have considered if this change warrants user-facing release notes and have added them to RELEASE-NOTES.txt if necessary.

---

Testing Checklist (strike-out the not-applying and unnecessary ones):

• WordPress.com sites and self-hosted Jetpack sites.
• Portrait and landscape orientations.
• Light and dark modes.
• Fonts: Larger, smaller and bold text.
• High contrast.
• Talkback.
• Languages with large words or with letters/accents not frequently used in English.
• Right-to-left languages. (Even if translation isn’t complete, formatting should still respect the right-to-left layout)
• Large and small screen sizes. (Tablet and smaller phones)
• Multi-tasking: Split screen and Pop-up view. (Android 10 or higher)

[wpmobilebot]

📲 You can test the changes from this Pull Request in WordPress by scanning the QR code below to install the corresponding build.

	App Name	WordPress
	Flavor	Jalapeno
	Build Type	Debug
	Version	pr20564-e3d6cb8
	Commit	e3d6cb8
	Direct Download	wordpress-prototype-build-pr20564-e3d6cb8.apk

Note: Google Login is not supported on these builds.

[wpmobilebot]

📲 You can test the changes from this Pull Request in Jetpack by scanning the QR code below to install the corresponding build.

	App Name	Jetpack
	Flavor	Jalapeno
	Build Type	Debug
	Version	pr20564-e3d6cb8
	Commit	e3d6cb8
	Direct Download	jetpack-prototype-build-pr20564-e3d6cb8.apk

Note: Google Login is not supported on these builds.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 40.31%. Comparing base (c188122) to head (db04745).
Report is 12 commits behind head on trunk.

❗ Current head db04745 differs from pull request most recent head e3d6cb8. Consider uploading reports for the commit e3d6cb8 to get more accurate results

Additional details and impacted files

@@           Coverage Diff           @@
##            trunk   #20564   +/-   ##
=======================================
  Coverage   40.31%   40.31%           
=======================================
  Files        1472     1472           
  Lines       67836    67836           
  Branches    11218    11218           
=======================================
  Hits        27351    27351           
  Misses      38019    38019           
  Partials     2466     2466           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[aditi-bhatia]

This change definitely makes more sense 👍 LGTM

[aditi-bhatia]

@irfano Just wanted to double check, it looks like the 24.6 code freeze is today. Do you know if it's already begun / if this PR will be going into 24.6 or 24.7? I see the update to Release Notes mentions 24.7 and want to make sure the version is correct if merged today.

[dangermattic]

	1 Warning
⚠️	This PR is assigned to the milestone 24.6. The due date for this milestone has already passed. Please assign it to a milestone with a later deadline or check whether the release for this milestone has already been finished.

Generated by 🚫 Danger

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
No data about Coverage
0.0% Duplication on New Code

See analysis details on SonarCloud

[irfano]

@irfano Just wanted to double check, it looks like the 24.6 code freeze is today. Do you know if it's already begun / if this PR will be going into 24.6 or 24.7? I see the update to Release Notes mentions 24.7 and want to make sure the version is correct if merged today.

I initially thought we couldn't merge this before the 24.6 code freeze. However, since the code freeze didn't happen yesterday, Ravi already updated the version in the release notes and merged it into 24.6. Thank you both!