Parser rejects valid block argument syntax in Resource::Silo

The issue is in the parser, likely in the grammar for function calls with block arguments. Start by examining the parser source code, perhaps under a 'grammar' or 'parse' directory. Look for how set_prototype or similar functions with block and subsequent arguments are handled. The minimal reproducer my $x = set_prototype { 1 } q{}; should be added as a test case. Run the existing parser tests to see the failure, then debug by comparing the parse tree with standard Perl's output.

Summary

PerlOnJava rejects valid Perl syntax used by Resource::Silo 0.1703. The
failure occurs while compiling the module, before its tests can run.

Reproduction

This standard-Perl expression is accepted by Perl 5:

my $shortcut_sub = set_prototype {
    $instance //= $target->new;
} '';

PerlOnJava reports a syntax error at the closing expression. The smallest
reproducer is:

use Scalar::Util qw(set_prototype);
my $x = set_prototype { 1 } q{};

Evidence

• Distribution: Resource-Silo 0.1703
• CPAN random tester run: 20260922-180448-60378
• Failing test: t/001-load.t, during use Resource::Silo
• System Perl: PASS, 39 test files and 148 tests
• PerlOnJava JVM backend: FAIL
• PerlOnJava interpreter backend: FAIL
• The minimal reproducer passes on system Perl and fails on both PerlOnJava
  backends.
• The distribution is pure Perl and does not require XS or native code.

Expected behavior

PerlOnJava should parse and execute a function call whose first argument is an
anonymous block followed by a second expression, matching standard Perl's
handling of set_prototype { ... } ''.

Acceptance criteria

• Add focused project-owned regression coverage for this syntax.
• The regression passes on both JVM and interpreter backends.
• Resource-Silo 0.1703 passes its complete upstream test suite.