feat(hermes): add pr2046 class-in-finally var caching patch

[ramonclaudio]

Add the hermes source patch for facebook/hermes#2046, a cherry-pick of 1e94fbe0eb onto the 250829098.0.0-stable branch React Native 0.85 ships.

A finally block emits its body twice. On the second emission, legacy class compilation built fresh internal Variables (class/prototype vars, the instance-element init function, computed field keys, private brands) while cached functions reached via findCompiledEntity still referenced the originals, miscompiling classes declared in finally. The cherry-pick caches them in a LegacyClassVars struct keyed by the class AST node and emits private-brand stores unconditionally.

Source-level replacement for the class-in-finally workaround dropped with @react-native/babel-preset #56816. Apply with git apply against a facebook/hermes V1 checkout. Root cause facebook/hermes#1761.

• add packages/hermes/hermes-pr2046.patch
• add the hermes row to the Open table