fix: export org.eclipse.tm4e.ui.samples package (#945)

Author: sebthom

org.eclipse.tm4e.ui/META-INF/MANIFEST.MF

@@ -22,11 +22,12 @@ Require-Bundle: org.eclipse.core.expressions,
 Bundle-RequiredExecutionEnvironment: JavaSE-21
 Export-Package: org.eclipse.tm4e.ui,
  org.eclipse.tm4e.ui.internal.model;x-friends:="org.eclipse.tm4e.languageconfiguration,org.eclipse.tm4e.ui.tests",
- org.eclipse.tm4e.ui.internal.themes;x-friends:="org.eclipse.tm4e.ui.tests",
  org.eclipse.tm4e.ui.internal.preferences;x-friends:="org.eclipse.tm4e.languageconfiguration",
+ org.eclipse.tm4e.ui.internal.themes;x-friends:="org.eclipse.tm4e.ui.tests",
  org.eclipse.tm4e.ui.internal.utils;x-friends:="org.eclipse.tm4e.ui.tests,org.eclipse.tm4e.languageconfiguration,org.eclipse.tm4e.languageconfiguration.tests",
  org.eclipse.tm4e.ui.internal.widgets;x-friends:="org.eclipse.tm4e.languageconfiguration",
  org.eclipse.tm4e.ui.model,
+ org.eclipse.tm4e.ui.samples,
  org.eclipse.tm4e.ui.text,
  org.eclipse.tm4e.ui.themes,
  org.eclipse.tm4e.ui.themes.css