Update for moon 0.1.20261012 (Int32/UInt32, new deprecations)

[bobzhang]

What failed on master (stable check): with moon 0.1.20261012 / moonc v0.10.15

• moon fmt + git diff --exit-code fails: the formatter now rewrites Int to Int32 and UInt to UInt32 (new builtin aliases).
• moon check --deny-warn fails: the parsers generated by moonbitlang/yacc call @list.empty(), which the bundled core now deprecates in favour of List([]).

What changed:

• Formatter output (moon fmt at the workspace root), 78 files. This part is byte-for-byte the tree of promote #207 (promote-20261012), so the two do not conflict; this PR is promote #207 plus the item below.
• warnings gets -20 (deprecated) in the three packages that contain a generated parser: attribute, mbti_parser, yacc_parser.

For review (left open on purpose):

• The -20 suppression is a stopgap. The deprecated call is in the generator's own output (runtime and its standard-library rules), not in the .mbty sources, and moonbitlang/yacc@0.7.23 (latest release) still emits it, so bumping the pin does not help. Once a yacc release emits List([]) (fix warnings and bump version moonyacc#87 is in flight), bump the pin in the four moon.pkg rules and drop -20. Until then the suppression also hides deprecations in the hand-written files of those three packages.
• Overlap with promote #207: merge either one first; the other then reduces to nothing (promote #207) or to the three moon.pkg lines (this PR).

CI status: every step passes on stable and nightly except the last one, "test openseek corpus", which is red for a reason outside this PR: moonbitlang/openseek@main (8647dcb) now contains range patterns written a..<=b (what the new formatter emits for a..=b), and the parser rejects them ("Unexpected token ..<=", 80 corpus checks). That needs ..<= support in the parser itself and will fail the same way on master and on #207.

Verification (moon 0.1.20261012, same commands as the stable workflow): moon -C lexer check ok, moon check --deny-warn clean, moon info --target all without diff, moon fmt without diff, moon test --target all wasm 2907, wasm-gc 2904, js 2904, native 2909, all passing (same counts as before the change). The openseek corpus test was left to CI.

Note: source using Int32/UInt32 needs moon 0.1.20261012 or newer.