docs: update settings app restart methods and services

[NGGTLightKeeper]

Updated SettingsView.md and SettingsService.md documentation to reflect the full app restart flow via the Launcher for personalization edits, detailing StartLauncherForApplicationRestart, updating SaveAsync, and dropping removed logic.

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PR created automatically by Jules for task 14783927511047149547 started by @NGGTLightKeeper

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[github-actions]

This pull request was closed automatically by CI.

Head branch jules-docs-dev-* / jules-patchnotes-dev-* is merged by the Jules automation pipeline; an open PR is not required.