Fix bar count issue with traffic chart

[irfano]

This fixes the bar count on the Traffic tab when "By month" is selected.

before	after

---

To Test:

1. Log in.
2. Open "My Site → Stats"
3. Select "By month" granularity.
4. Select the previous month by tapping < button.
5. Verify that there is the correct number of bars on the chart.
6. Repeat 4 and 5 for more months.

---

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)

   • There aren't UI tests for stats currently. We will take of this with Add UI tests for Stats #20289.

---

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)

[dangermattic]

	1 Warning
⚠️	This PR is assigned to the milestone 24.5. This milestone is due in less than 4 days. Please make sure to get it merged by then or assign it to a milestone with a later deadline.

Generated by 🚫 Danger

[sonarqubecloud]

Quality Gate passed

Issues
6 New issues
0 Accepted issues

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

See analysis details on SonarCloud

[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	pr20475-bb577fd
	Commit	bb577fd
	Direct Download	jetpack-prototype-build-pr20475-bb577fd.apk

Note: Google Login is not supported on these builds.

[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	pr20475-bb577fd
	Commit	bb577fd
	Direct Download	wordpress-prototype-build-pr20475-bb577fd.apk

Note: Google Login is not supported on these builds.

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 23 lines in your changes are missing coverage. Please review.

Project coverage is 40.42%. Comparing base (b3c7fcf) to head (bb577fd).

Files	Patch %	Lines
...h/lists/sections/traffic/TrafficOverviewUseCase.kt	0.00%	23 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##            trunk   #20475      +/-   ##
==========================================
- Coverage   40.44%   40.42%   -0.02%     
==========================================
  Files        1462     1462              
  Lines       67241    67261      +20     
  Branches    11176    11179       +3     
==========================================
  Hits        27193    27193              
- Misses      37573    37593      +20     
  Partials     2475     2475              

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[ravishanker]

LGTM 👍