Stats traffic fix graph issues

[ravishanker]

Fixes #
#20312
#20311

Week	Year	Detail

---

To Test:

• Enable Stats Traffic Feature flag
• Open Stats
• Open Traffic tab

Bar graph

• Select By week/year
• Verify the bars now start at base, and no gap as in Week, Year images above

Detail Views Graph

• Select Posts & Pages card
• Go to detail view
• Ensure the graph is show as in the third image above

---

Regression Notes

1. Potential unintended areas of impact

   • No unintended impact

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

   • tested all bar charts

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

   • existing unit tests

---

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.

[dangermattic]

	2 Warnings
⚠️	Class TrafficBarChartItem is missing tests, but unit-tests-exemption label was set to ignore this.
⚠️	This PR is assigned to the milestone 24.4. 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.

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	App Name	Jetpack
	Flavor	Jalapeno
	Build Type	Debug
	Version	pr20336-5f6bcd1
	Commit	5f6bcd1
	Direct Download	jetpack-prototype-build-pr20336-5f6bcd1.apk

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[wpmobilebot]

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	App Name	WordPress
	Flavor	Jalapeno
	Build Type	Debug
	Version	pr20336-5f6bcd1
	Commit	5f6bcd1
	Direct Download	wordpress-prototype-build-pr20336-5f6bcd1.apk

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[codecov]

Codecov Report

Attention: Patch coverage is 3.12500% with 31 lines in your changes are missing coverage. Please review.

Project coverage is 40.18%. Comparing base (1f30dda) to head (5f6bcd1).
Report is 8 commits behind head on trunk.

Files	Patch %	Lines
...press/android/ui/stats/refresh/utils/StatsUtils.kt	0.00%	19 Missing ⚠️
...d/ui/stats/refresh/lists/sections/BlockListItem.kt	10.00%	9 Missing ⚠️
...sh/lists/sections/traffic/TrafficOverviewMapper.kt	0.00%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##            trunk   #20336      +/-   ##
==========================================
- Coverage   40.19%   40.18%   -0.02%     
==========================================
  Files        1476     1476              
  Lines       68206    68235      +29     
  Branches    11317    11319       +2     
==========================================
+ Hits        27416    27417       +1     
- Misses      38281    38309      +28     
  Partials     2509     2509              

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

[irfano]

@staskus, I can't reproduce the issue of "Weekly and yearly bar chart bars start above 0" on trunk. Can you retest it on trunk and confirm if it has been resolved in this PR?

[irfano]

LGTM! 👍🏻

[irfano]

I'm merging this PR, but I'm unsure if this PR has fixed #20311. If we reproduce it again, we can reopen the issue.

[staskus]

@irfano, thanks for reminding! Just tested it, not reproducible anymore.