feat: support reset_on_change parameter schema

[zyqzyq]

Fixes langgenius/dify#40180

Description

This PR adds support for the optional reset_on_change field across plugin parameter declarations.

The field is now available for:

• Tool parameters
• Agent strategy parameters
• Datasource parameters
• Model provider credential fields
• Provider configuration fields

reset_on_change is supported in both JSON and YAML. Empty values are omitted to maintain backward compatibility.

Validation rules limit the field to 16 dependencies, with each dependency required to be a non-empty string shorter than 1024 characters.

Type of Change

• Bug fix
• New feature
• Refactor
• Performance improvement
• Other

Essential Checklist

Testing

• I have tested the changes locally and confirmed they work as expected
• I have added unit tests where necessary and they pass successfully

Bug Fix (if applicable)

• I have used GitHub syntax to close the related issue (e.g., Fixes #123 or Closes #123)

Additional Information

• Added unit tests for JSON and YAML serialization of reset_on_change.
• Verified that the field is omitted when it is not configured.
• Added validation coverage for exceeding the maximum number of dependencies.
• This change is backward-compatible because existing declarations do not need to define the new field.