[Patch] Copy-pasting an item in an RCL project adds junk to the project file

[pranavkm]

Issue tracking possibly porting this fix for 2.1.x.

[muratg]

Approved for 2.1.3.

[NTaylorMullen]

Approved for 2.1.3.

Am I good to merge the corresponding PR?

[pranavkm]

Waiting on @ryanbrandenburg \ @natemcmaster to confirm when the branches are ready for 2.1.3 patch stuff.

[natemcmaster]

We are not yet ready for 2.1.3 last I heard. I'll send mail to the team when release/2.1 branches are open for 2.1.3 work.