3.1.6: Maintenance Release

Editor

• Do not flag env var in num typedInput as error (#4582) @knolleary
• Fix example flow name in import dialog (#4578) @kazuhitoyokoi
• Fix missing node icons in workspace (#4570) @knolleary

Runtime

• Handle undefined env vars (#4581) @knolleary
• fix: Removed offending MD5 crypto hash and replaced with SHA1 and SHA256 … (#4568) @JaysonHurst
• chore: remove never use import code (#4580) @giscafer

Nodes

• fix: template node zh-CN translation (#4575) @giscafer