Fix pasting of procedures_defreturn blocks from Backpack
Fix pasting of procedures_defreturn blocks from Backpack

Creating new procedures that return values in the blocks editor could
result in multiple procedures having the same name. This commit
updates the procedures_defreturn initialization to match that of
procedures_defnoreturn so that renaming is correctly applied.

Change-Id: Ifc30ee27d538b46a61a17d0d4677dad31c4d7d4d

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