fix(frontend): Fix client-side validation for Agent Executor Block

[majdyz]

AgentExecutorBlock stores the input data in the data field of the hardcoded value.
Currently, the AgentExecutorBlock is validating the metadata instead of the actual data.

Changes 🏗️

• Fixed the false-negative validation error on the agent block executor.
• Propagated the error of the validation error to the user instead of throwing a blanket Invalid credentials or inputs error.
• Added open agent context menu item on the agent block executor.

Checklist 📋

For code changes:

• I have clearly listed my changes in the PR description
• I have made a test plan
• I have tested my changes according to the test plan:
  • ...

Example test plan

• Create from scratch and execute an agent with at least 3 blocks
• Import an agent from file upload, and confirm it executes correctly
• Upload agent to marketplace
• Import an agent from marketplace and confirm it executes correctly
• Edit an agent from monitor, and confirm it executes correctly

For configuration changes:

• .env.example is updated or already compatible with my changes
• docker-compose.yml is updated or already compatible with my changes
• I have included a list of my configuration changes in the PR description (under Changes)

Examples of configuration changes

• Changing ports
• Adding new services that need to communicate with each other
• Secrets or environment variable changes
• New or infrastructure changes such as databases

[qodo-merge-pro]

PR Reviewer Guide 🔍

Here are some key observations to aid the review process:

⏱️ Estimated effort to review: 2 🔵🔵⚪⚪⚪

🧪 No relevant tests

🔒 Security concerns XSS vulnerability: The PR introduces a new feature that opens URLs using window.open() with a flowID parameter. If the nodeFlowId is not properly sanitized, this could potentially lead to XSS attacks. The code should ensure that nodeFlowId only contains valid characters and is properly encoded before being used in the URL.

⚡ Recommended focus areas for review Error Handling The validation error message is now exposed directly to the user interface. Need to verify that no sensitive information could be leaked through validation error messages. Security Check The new 'Open agent' feature opens URLs directly using window.open(). Need to validate that the nodeFlowId is properly sanitized to prevent potential XSS attacks.

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