Remove the processing of single quote when testing API tools.

[weimzh]

Summary

Fix issue with using an JSON object with single quote in a string when testing API tools.

Simply replacing the single quote with double quote will cause issue if some string in the JSON object contains single quotes. This fixes the issue.

For example:

{"key": "value 'test'"}

the original code in Dify will simply replace the simple quotes into double quotes, ie:

{"key": "value 'test'"} -> {"key": "value "test""}, which will definitely cause problems.

Checklist

• This change requires a documentation update, included: Dify Document
• I understand that this PR may be closed in case there was no previous discussion or issues. (This doesn't apply to typos!)
• I've added a test for each change that was introduced, and I tried as much as possible to make a single atomic change.
• I've updated the documentation accordingly.
• I ran dev/reformat(backend) and cd web && npx lint-staged(frontend) to appease the lint gods

[laipz8200]

@hjlarry Could you please review this issue? I believe we do not require support for single quotes in this instance. Perhaps we could consider removing this feature instead.

[hjlarry]

@hjlarry Could you please review this issue? I believe we do not require support for single quotes in this instance. Perhaps we could consider removing this feature instead.

I think we should remove the processing of single quote, @weimzh please just remain json.loads(value). :)

[weimzh]

@hjlarry Could you please review this issue? I believe we do not require support for single quotes in this instance. Perhaps we could consider removing this feature instead.

I think we should remove the processing of single quote, @weimzh please just remain json.loads(value). :)

Done

[laipz8200]

Thank you for your contribution!