fix: increase whitespace between mean and median charts

[banders]

Description

Two CSS style classes used in the HTML report (ps-2 and pe-2) weren't defined as embedded styles within the report, so the report depended on finding definitions for these styles in the surrounding page (into which the HTML report gets injected). This worked for the HTML version of the report when viewed through the PT application, but the styles remain undefined for the PDF report. I addressed this by embedding definitions for both styles into the report.

This fixes a whitespace issue between the side-by-side "mean" and "median" charts in the application (i.e. there's now sufficient horizontal whitespace between the charts).

Also slightly widened the right margin beside the "mean" and "median" charts so that the line break within "Prefer not to say / Unknown" occurs after the slash.

Fixes # GEO-616

Type of change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)

How Has This Been Tested?

Visual inspection of the HTML and PDF reports.

Checklist

• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have already been accepted and merged

---

Thanks for the PR!

Deployments, as required, will be available below:

• Frontend

Please create PRs in draft mode. Mark as ready to enable:

• Analysis Workflow

After merge, new images are deployed in:

• Merge Workflow

---

Thanks for the PR!

Deployments, as required, will be available below:

• Frontend

Please create PRs in draft mode. Mark as ready to enable:

• Analysis Workflow

After merge, new images are deployed in:

• Merge Workflow

[sonarcloud]

Quality Gate passed for 'Pay Transparency backend-external'

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
No data about Coverage
No data about Duplication

See analysis details on SonarCloud

[sonarcloud]

Quality Gate passed for 'Pay Transparency Frontend'

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
No data about Coverage
No data about Duplication

See analysis details on SonarCloud

[sonarcloud]

Quality Gate passed for 'Pay Transparency Backend'

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
No data about Coverage
No data about Duplication

See analysis details on SonarCloud

[sonarcloud]

Quality Gate passed for 'Pay Transparency doc-gen-service'

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
No data about Coverage
No data about Duplication

See analysis details on SonarCloud