LibJS: Add UsingDeclaration to needs_block_declaration_instantiation

Blocks containing non-local using declarations need a lexical
environment, just like let/const declarations. Add the missing
UsingDeclaration case to match C++ behavior.

Libraries/LibJS/Rust/src/bytecode/codegen.rs

@@ -8437,6 +8437,15 @@ fn needs_block_declaration_instantiation(scope: &ScopeData) -> bool {
                     return true;
                 }
             }
+            StatementKind::UsingDeclaration { declarations } => {
+                for declaration in declarations {
+                    let mut names = Vec::new();
+                    collect_target_names(&declaration.target, &mut names);
+                    if !names.is_empty() {
+                        return true;
+                    }
+                }
+            }
             _ => {}
         }
     }

Tests/LibJS/Bytecode/expected/using-declaration-non-local-env.txt

@@ -0,0 +1,30 @@
+JS bytecode executable ""
+[   0]    0: GetLexicalEnvironment dst:reg4
+[   8]       Jump target:@58
+[  10]    1: Catch dst:reg5
+[  18]       SetLexicalEnvironment environment:reg4
+[  20]       Mov dst:e~0, src:reg5
+[  30]       Mov dst:reg6, src:Undefined
+[  40]       Mov dst:reg7, src:reg6
+[  50]    2: End value:reg6
+[  58]    3: Mov dst:reg5, src:Undefined
+[  68]       NewFunction dst:reg8, shared_function_data_index:0
+[  80]       Call dst:reg6, callee:reg8, this_value:Undefined
+[  a0]       Mov dst:reg5, src:reg6
+[  b0]       Mov dst:reg6, src:reg5
+[  c0]       End value:reg6
+
+Exception handlers:
+    from   58 to   c8 handler   10
+
+JS bytecode executable ""
+[   0]    0: GetLexicalEnvironment dst:reg4
+[   8]       CreateLexicalEnvironment dst:reg5, parent:reg4, capacity:0
+[  18]       CreateImmutableBinding environment:reg5, identifier:x, strict_binding:true
+[  28]       NewTypeError dst:reg6, TODO: UsingDeclaration
+[  38]       SetLexicalEnvironment environment:reg4
+[  40]       Throw src:reg6
+[  48]    1: NewFunction dst:reg7, shared_function_data_index:0
+[  60]       Call dst:reg6, callee:reg7, this_value:Undefined
+[  80]       SetLexicalEnvironment environment:reg4
+[  88]       End value:Undefined

Tests/LibJS/Bytecode/input/using-declaration-non-local-env.js

@@ -0,0 +1 @@
+try { (function() { { using x = {}; (() => x)(); } })(); } catch (e) {}