Repros on every version from 4.10.0 to master (f1685926ca)

Repro steps:
1. Create a new shadergraph or subgraph
2. Add a vector1 property
3. Name the property "" (two quotation marks), or any name with quotation marks should work
4. Create a node
Expected result: the node doesn't error or quotation marks are not allowed
Actual result: the node will have an error. If you save and reopen the graph, all nodes will have an error. Renaming the property to not have quotes, saving and reopening will clear the errors. Other bugs can result from this, such as the name of the tab becoming empty on save.