Stats: Charts improvements and fixes

[kean]

Description

• Fix CMM-1151: Bar chart doesn't start at the start of the year for yearly view. The xAxisDomain is now set to match the requested time period instead of automatically determining it based on the available data points
• Improve how the scenarios like request “Last 7 days” with “Yearly” granularity are handled. The design now matches what the web does – it simply puts one bar in the middle of the screen.
• Improve how x axis labels are rendered. They now always include the start of the period and generally display more labels, so in many cases they directly align with most of the data points.
• Add a comprehensive set of previews for BarChartView and PieChartView
• Fix CMM-774: Labels on X axis are slightly misaligned be revoking how labels are added. It now adds all labels based on the time period and granularity but selectively renders them.
• Update the bar chart to look more like Dotcom: reduce the gradients, reduce corner radius

Screenshots (General)

Before

After

Screenshots (iPad)

The alignment problem was especially bad on iPad and is now fixed.

Before

After

[dangermattic]

	1 Warning
⚠️	This PR is larger than 500 lines of changes. Please consider splitting it into smaller PRs for easier and faster reviews.

Generated by 🚫 Danger

[wpmobilebot]

🤖 Build Failure Analysis

This build has failures. Claude has analyzed them - check the build annotations for details.

[crazytonyli]

Is this used?

[kean]

Oh, I forgot to remove it. I switched to using granularity.

[sonarqubecloud]

Quality Gate passed

Issues
4 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
8.0% Duplication on New Code

See analysis details on SonarQube Cloud