Thanks Erel. Note sure if pressing the Play ( |> ) button or the laptop restart I performed did the trick, but my RH-edited application name now displays in place of the undesired default.
However, when I start my application from its shortcut which I pinned to the taskbar, a second application icon displays in the taskbar (vs. getting the shaded box and underscore for the originally pinned icon). Further, if I pin that second icon instance to the taskbar, a shortcut is created for it that tries to open the bin folder's EXE instead. Both behaviors are obviously undesirable too.
An important point: I use the B4J 'Build Standalone Package' tool to build my application EXE, and then run its generated Inno Script Studio script file to build the application's installation setup.