LPS-51488 truncation error on DLFolder name column during portlet import

Hi Jonathan,

I made a PR for this same issue a while ago, but different changes were merged into master: https://github.com/brianchandotcom/liferay-portal/pull/22829
Testing the changes that were made before making a patch, I found that they did not resolve the issue.
I consulted Andrew, and the new solution I am proposing mainly changes the jsp's involved in importing a portlet LAR.

Thank you,
Kayleen