[ui] Fix case sensitivity in launchpad partition picker

[hellendag]

Summary & Motivation

I noticed that on one of my assets with string partition names, searching for the partition in the asset launchpad is case-sensitive. It shouldn't be.

How I Tested These Changes

View asset with named partitions, open launchpad. Search for a partition, verify that it appears regardless of query case.

Changelog [New | Bug | Docs]

[ui] Fix case sensitivity when searching for partitions in the launchpad.