Removes residue style overrides prop code

[akolson]

Summary

This pr removes all residual code from the remove of the styleOverrides prop.

References

Closes #13852

Reviewer guidance

• Install the Safe Html5 plugin by running kolibri plugin enable kolibri.plugings.safe_html5_viewer
• Run Kolibri and view HTML5 content
• Ensure no regressions

[Copilot]

Pull request overview

Removes remaining styleOverrides prop usage from the SafeHTML image rendering flow and replaces window-size-dependent logic with useKResponsiveWindow.

Changes:

• Removed styleOverrides prop plumbing from SafeHtmlImage → Lightbox.
• Added useKResponsiveWindow usage in Lightbox to compute sizing based on windowIsSmall.
• Updated lightbox sizing calculations to no longer depend on styleOverrides.windowSizeClass.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
packages/kolibri-common/components/SafeHTML/SafeHtmlImage.vue	Stops accepting/passing styleOverrides when opening the lightbox.
packages/kolibri-common/components/SafeHTML/Lightbox.vue	Uses useKResponsiveWindow to determine small-window sizing instead of styleOverrides.

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[github-actions]

Build Artifacts

Asset type	Download link
PEX file	kolibri-0.19.1a0.dev0_git.43.g22906297.pex
Windows Installer (EXE)	kolibri-0.19.1a0.dev0+git.43.g22906297-windows-setup-unsigned.exe
Debian Package	kolibri_0.19.1a0.dev0+git.43.g22906297-0ubuntu1_all.deb
Mac Installer (DMG)	kolibri-0.19.1a0.dev0+git.43.g22906297.dmg
Android Package (APK)	kolibri-0.19.1a0.dev0+git.43.g22906297-0.1.6-debug.apk
Raspberry Pi Image	kolibri-pi-image-0.19.1a0.dev0+git.43.g22906297.zip
TAR file	kolibri-0.19.1a0.dev0+git.43.g22906297.tar.gz
WHL file	kolibri-0.19.1a0.dev0+git.43.g22906297-py2.py3-none-any.whl

[Copilot]

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