[Feature] Fix ServiceClientCheck checkstyle errors

[mssfang]

Remove below suppressions(azure-sdk-for-java\eng\code-quality-reports\src\main\resources\checkstyle\checkstyle-suppressions.xml)
and then fix the checkstyles errors that it generates:

  <!-- Suppress these checks until CI pipeline setup -->
  <suppress checks="com.azure.tools.checkstyle.checks.ServiceClientCheck" files=".*[/\\]textanalytics[/\\].*"/>

[samvaity]

<suppress checks="MissingJavadocMethod" files=".*[/\\]textanalytics[/\\].*"/>
was handled in #7162