APIv4 - Respect max length for name with export action

[colemanw]

Overview

When using the APIv4 Export action, make sure the name of each exported item is not longer than allowed by the civicrm_managed table.

Before

Issue noted in #23452 (comment)

After

Length constrained.

Technical Details

IMO the maxlength of 127 is unnecessarily short, but the fix isn't a simple matter of increasing it because extensions typically support multiple versions of CiviCRM.

Comments

Note that the export action is simply a code generator, so this isn't directly causing a runtime error, but it's still nice to generate working code.

[civibot]

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[seamuslee001]

Looks fine to me