Skip emission for suppressed calls (empty compile result)

When compile_call returns "" (suppressed NamedTuple/apply_type),
don't emit _vN = ; which is invalid JS.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: Dale-Black

src/compiler/codegen.jl

@@ -479,7 +479,9 @@ Emit an expression statement, assigning to local if needed.
 function compile_expr_stmt!(ctx, buf, idx, expr::Expr, indent::String)
     if expr.head === :call
         result = compile_call(ctx, expr)
-        if haskey(ctx.js_locals, idx)
+        if isempty(result)
+            # Suppressed call (e.g., NamedTuple constructor, apply_type) — skip
+        elseif haskey(ctx.js_locals, idx)
             name = ctx.js_locals[idx]
             print(buf, "$(indent)$(name) = $(result);\n")
         else
@@ -488,15 +490,19 @@ function compile_expr_stmt!(ctx, buf, idx, expr::Expr, indent::String)
         end
     elseif expr.head === :invoke
         result = compile_invoke(ctx, expr)
-        if haskey(ctx.js_locals, idx)
+        if isempty(result)
+            # Suppressed
+        elseif haskey(ctx.js_locals, idx)
             name = ctx.js_locals[idx]
             print(buf, "$(indent)$(name) = $(result);\n")
         else
             print(buf, "$(indent)$(result);\n")
         end
     elseif expr.head === :new
         result = compile_new_expr(ctx, expr)
-        if haskey(ctx.js_locals, idx)
+        if isempty(result)
+            # Suppressed
+        elseif haskey(ctx.js_locals, idx)
             name = ctx.js_locals[idx]
             print(buf, "$(indent)$(name) = $(result);\n")
         else