Fix the name location reporting for "if var" and catch statements

[jabraham17]

Fixes the name location reporting for "if var" and catch statements. This fixes issues with the language server, where more than the symbol name would be highlighted.

Cases fixed

if const x = 10 { ... }

try { ... }
catch err: Error {  }

Testing

• paratest with/without gasnet
• make test-cls

[Reviewed by @DanilaFe]