Fix Test::More non-local last SKIP warning suppression

[fglock]

Tags 0.16 fails Test::NoWarnings around non-local last SKIP

Summary

The upstream Tags 0.16 suite passes under system Perl but PerlOnJava fails one test because Test::More::skip() emits an unexpected Exiting subroutine via last warning while executing a non-local last SKIP.

Reproduction

The stable failing test is t/Tags-Output-Raw/09-put-preserve_from_attribute.t, whose skip block uses:

use warnings;
use Test::More tests => 4;
use Test::NoWarnings;

SKIP: {
    skip 'Need check.', 1;
}

Test::More::skip() executes last SKIP under no warnings 'exiting'. Standard Perl suppresses the warning and the test passes.

Results

• Distribution: Tags 0.16
• CPAN random-tester run: 20260922-093937-23377
• System Perl: PASS, 38 files / 196 tests
• PerlOnJava JVM backend: FAIL, 1 of 196 tests
• PerlOnJava interpreter backend: FAIL, 1 of 196 tests

The PerlOnJava failure reports:

Exiting subroutine via last at Test/More.pm line 1413

The JVM minimal reproducer may additionally report Label not found for "last SKIP"; the archived distribution run fails through Test::NoWarnings because of the unexpected warning.

This is a PerlOnJava control-flow and warning-suppression compatibility issue, not a Tags implementation failure or native dependency issue.

Acceptance criteria

• Test::More::skip() suppresses the exiting warning for its intentional non-local last SKIP on both backends.
• The focused reproducer passes without an unexpected warning.
• Tags 0.16 t/Tags-Output-Raw/09-put-preserve_from_attribute.t passes on both backends.
• Add a project-owned, standard-Perl-validated regression test for this behavior.

[fglock]

Additional CPAN regression coverage from random-tester run 20260922-155215-98120:

• Distribution: Code::Perl 0.03
• Stable failing test: t/expr.t
• System Perl: PASS, 80 tests
• PerlOnJava JVM backend: FAIL; all 17 subtests pass, but Test::More::skip() emits Exiting subroutine via last and then Label not found for "last SKIP", causing exit 255
• Focused interpreter reproduction: PASS

This independently confirms the non-local last SKIP control-flow/warning-suppression defect tracked here. No duplicate issue is needed.