[browser][CoreCLR] startup helpers cleanup

[pavelsavara]

• make the run method more readable by forEachResource and normalizeCollection helpers
• callLibraryInitializerOnRuntimeConfigLoaded and callLibraryInitializerOnRuntimeReady in the assets.ts

[Copilot]

Pull request overview

Refactors the browser/CoreCLR JS loader bootstrap flow to improve readability by introducing helpers for iterating optional resource collections, and centralizes library-initializer invocation logic into assets.ts.

Changes:

• Adds forEachResource / normalizeCollection helpers to simplify optional resource handling in createRuntime.
• Moves onRuntimeConfigLoaded / onRuntimeReady library-initializer invocation into assets.ts.
• Adjusts the runtime bootstrap sequence to use the new helpers and initializer functions.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 5 comments.

File	Description
src/native/libs/Common/JavaScript/loader/run.ts	Refactors runtime creation flow, introduces resource-iteration helpers, and rewires library initializer invocation.
src/native/libs/Common/JavaScript/loader/assets.ts	Adds exported helpers to invoke library initializer hooks at config-loaded and runtime-ready phases.

[Copilot]

Pull request overview

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

[Copilot]

Pull request overview

Copilot reviewed 2 out of 2 changed files in this pull request and generated 4 comments.

[Copilot]

Pull request overview

Copilot reviewed 2 out of 2 changed files in this pull request and generated 3 comments.

[pavelsavara]

/ba-g unrelated failures