feat(input): support additional triggers

[avivkeller]

This PR lets this action support additional triggers, such as workflow_run by supporting a issue-number input

[Copilot]

Pull Request Overview

This PR modifies the action to allow it to be triggered by non-pull_request events by making the issue number configurable via an input parameter instead of deriving it from the event context.

• Removes the event type validation that restricted the action to only pull_request and pull_request_target events
• Adds a new issue-number input parameter with a default value that attempts to extract the issue number from various event types
• Updates the code to read the issue number from the input instead of the event context

Reviewed Changes

Copilot reviewed 3 out of 5 changed files in this pull request and generated 3 comments.

File	Description
src/main.ts	Removes event type check and extracts issue number from input instead of context
dist/index.js	Compiled JavaScript output reflecting the TypeScript changes
action.yml	Adds new issue-number input with default value from event context
README.md	Documents the new issue-number input parameter in the inputs table

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