fix(backend): Fix credentials cost filter not able to filter the block cost

[majdyz]

We've started enabling cost based on the partial value of the credentials field. And this logic has never been supported.

Changes 🏗️

• Add partial object matching on the input data filter for evaluating the block cost.
• Add missing credentials for ExtractWebsiteContentBlock
• Removed fallback cost on LLM blocks.

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

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[qodo-merge-pro]

PR Reviewer Guide 🔍

Here are some key observations to aid the review process:

⏱️ Estimated effort to review: 3 🔵🔵🔵⚪⚪

🧪 No relevant tests

🔒 No security concerns identified

⚡ Recommended focus areas for review Logic Bug The recursive _is_filter_match function may not handle all edge cases properly, especially for deeply nested objects or arrays. The function should validate input types and handle potential null/undefined values more carefully. Code Duplication The isFilterMatch function in the frontend duplicates the same logic as the backend's _is_filter_match. Consider extracting this into a shared utility function to maintain consistency. Code Organization The cost configuration is becoming complex with multiple provider-specific sections. Consider refactoring to organize costs by provider in separate configuration files or objects.

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