Fix 19869: don't export action settings, don't let one broken entry block startup, and don't leave a stale tail when rewriting the export file - #19914

Fix 19869: don't export action settings, don't let one broken entry block startup, and don't leave a stale tail when rewriting the export file#19914

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oliveiraallex:19869-Startup-preferences-create-broken-StartupAction-calls-on-Exportoliveiraallex/pharo:19869-Startup-preferences-create-broken-StartupAction-calls-on-ExportCopy head branch name to clipboard