Change actionId to action in v2

[brionmario]

Purpose

This pull request makes a minor update to the @asgardeo/javascript package, specifically renaming the actionId property to action in the EmbeddedSignInFlowRequest interface to improve clarity and consistency.

• Renamed the actionId property to action in the EmbeddedSignInFlowRequest interface in embedded-signin-flow-v2.ts for clearer naming.
• Updated documentation and changelog to reflect the property name change.

Related Issues

• feat: provide initial provision for asgardeo/thunder runtime #212

Related PRs

• N/A

Checklist

• Followed the CONTRIBUTING guidelines.
• Manual test round performed and verified.
• Documentation provided. (Add links if there are any)
• Unit tests provided. (Add links if there are any)

Security checks

• Followed secure coding standards in http://wso2.com/technical-reports/wso2-secure-engineering-guidelines?
• Confirmed that this PR doesn't commit any keys, passwords, tokens, usernames, or other secrets?

[asgardeo-github-bot]

🦋 Changeset detected

The changes in this PR will be included in the next version bump.

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