Purpose

Replacing preview images and dyn files for PythonScript and PythonScriptFromString nodes.
Fixing the next bugs for the PythonScript and PythonScriptFromString: The preview graph images in DocumentationBrowser are not updated using the latest modern style. When trying to insert the Documentation graph into the workspace is sending an error due that the dyn file doesn't exist.
Missing validation for jpg images resolution

Then I did the next fixes:

• The missing dyn files were added to Dynamo\doc\distrib\NodeHelpFiles folder.
• The dyn files were updated in Dynamo and got screenshots for replacing the jpg images in Dynamo\doc\distrib\NodeHelpFiles.

Declarations

Check these if you believe they are true

• The codebase is in a better state after this PR
• Is documented according to the standards
• The level of testing this PR includes is appropriate
• User facing strings, if any, are extracted into *.resx files
• All tests pass using the self-service CI.
• Snapshot of UI changes, if any.
• Changes to the API follow Semantic Versioning and are documented in the API Changes document.
• This PR modifies some build requirements and the readme is updated
• This PR contains no files larger than 50 MB

Release Notes

Replacing preview images and dyn files for PythonScript and PythonScriptFromString nodes.

Reviewers

@QilongTang @reddyashish @Amoursol

FYIs