doesn't seem to work in interactive shells

[tmbdev]

When trying to insert a Unicode character in an interactive Julia REPL, it inserts it instead into a source code buffer.

Reproduce:

• open a Julia source file
• start a REPL (e.g., by evaluating something with Alt-Return)
• switch to the REPL by clicking in it
• select Insert Unicode Character from the palette
• the character gets inserted in the source file, not the REPL