BL-15855 upgrade config-r

[hatton]

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This change is 

[Copilot]

Pull request overview

Upgrades the BloomBrowserUI dependency on @sillsdev/config-r and updates the Book Settings dialog to match the newer Config-R page/group API.

Changes:

• Bump @sillsdev/config-r from 1.0.0-alpha.15 to 1.0.0-alpha.18 (and update yarn.lock accordingly).
• Remove the no-longer-needed patch-package patch that adjusted @sillsdev/config-r’s package.json exports.
• Refactor BookSettingsDialog to use ConfigrPage/ConfigrGroup/ConfigrStatic and update the initial selection prop name.

Reviewed changes

Copilot reviewed 3 out of 4 changed files in this pull request and generated no comments.

File	Description
src/BloomBrowserUI/yarn.lock	Locks @sillsdev/config-r to 1.0.0-alpha.18 with updated resolved/integrity metadata.
src/BloomBrowserUI/patches/@sillsdev+config-r+1.0.0-alpha.15.patch	Removes the patch previously required to fix Config-R exports.
src/BloomBrowserUI/package.json	Updates the declared @sillsdev/config-r dependency version.
src/BloomBrowserUI/bookEdit/bookSettings/BookSettingsDialog.tsx	Updates the dialog structure to Config-R’s newer page-based API and adjusts theming for the custom slider.

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