Restore part of TestRegularized to work with non-null dtdData

Description

Part of TestRegularized was disabled in [CLDR-12007] so that the test could pass after fixing XPathParts.cloneAsThawed so that it copies dtdData instead of setting it to null. In TestDtdData.java:

xpath

None

locale

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Priority

TBD

Assignee

Mark Davis

Reporter

Thomas Bishop

Reviewer

None

Fix versions

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phase

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Components

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