Add defaultValue to native view attribute configs - #59890

Summary:

Add per-attribute defaultValue payloads for props omitted or explicitly undefined on initial creation. For example, {defaultValue: 13, resetValue: undefined} sends 13 on mount and undefined when a previously supplied prop is removed. Explicit null keeps its normal meaning.

Defaults are final payloads and bypass process. They support nested/flattened attributes and are cached per immutable view config. Updates, setNativeProps, and Fabric visibility changes do not reapply them. Existing configurations keep their behavior; opaque values require a component whose transport accepts them.

Part of #59884, stacked on #59889. Incremental diff. Includes the regenerated development, production, and profiling Fabric bundles for react#38171, which marks visibility payloads as updates. Existing Codegen and native defaults stay in place.

Changelog:

[GENERAL][ADDED] - Add defaultValue to native view attribute configurations for initial omitted or undefined props.

Test Plan:

• Built Hermes and Fantom from source. yarn fantom 'ReactNativeAttributePayload|ReactNativeElement|/View-itest' --runInBand: 514 passed, 2 existing skips. The payload suite runs against development and production JavaScript, including native mount, update, removal, imperative updates, and hide/show behavior.
• Ran the same suites with ASan and UBSan: 514 passed with no sanitizer errors.
• The prerequisite's renderer-core C++ suite passed all 99 tests.
• yarn flow status --show-all-errors, yarn build-types, and yarn test-generated-typescript passed. ESLint and Prettier passed for changed source files.
• Built all three Fabric bundles from RN's React revision dc9aed364252a34966f4f2c4a98272317fdddb60 plus the companion patch. The unmodified baseline bodies match RN's existing bundles exactly.
• Companion React Fabric tests passed in source development/production and both WWW channels with both variants. Added a regression test for visibility payload options.