feat: prevent export of results from non-downloadable datasets

[seongjinyoon]

Description:

Implemented restriction on export result to prevent users from exporting workflow results that depend on non-downloadable datasets they don't own. This ensures dataset download cannot be circumvented through workflow execution and result export.

Closes #3766

Changes:

Backend

• Added server-side validation to analyze workflow dependencies and block export of operators that depend on non-downloadable datasets
• Implemented algorithm to propagate restrictions to downstream operators

Frontend

• Updated export dialog component to show restriction warnings, filter exportable operators, and display blocking dataset
  information

Video:

The video demonstrates how export result behaves on:

• workflows with downloadable datasets
• workflows with non-downloadable datasets
• workflows with both downloadable and non-downloadable datasets

Screen.Recording.2025-09-26.at.12.27.38.AM.mov

[Copilot]

Pull Request Overview

This pull request implements a feature to prevent export of workflow results that depend on non-downloadable datasets the user doesn't own, ensuring dataset access controls cannot be bypassed through workflow execution and result export.

• Adds server-side validation to analyze workflow dependencies and prevent export of operators dependent on restricted datasets
• Implements frontend UI changes to show restriction warnings and filter exportable operators
• Uses dataset ownership and downloadable flags to determine export eligibility with propagation to downstream operators

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 4 comments.

File	Description
workflow-result-export.service.ts	Adds dataset metadata tracking, restriction analysis, and export filtering logic
result-exportation.component.ts	Updates export dialog to handle restricted operators and display warnings
result-exportation.component.html	Adds UI alerts for partial and complete export restrictions
WorkflowExecutionsResource.scala	Implements server-side validation to block export of restricted operators

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[seongjinyoon]

@chenlica @aglinxinyuan

[aglinxinyuan]

@aicam and @bobbai00 can review this PR.

[chenlica]

I removed @aicam from the reviewer list.

@bobbai00 and @kunwp1 : please review this PR.

[kunwp1]

@seongjinyoon Can you add comments on top of each class and function so that reviewers can easily understand the code? Thanks!

[chenlica]

@kunwp1 After you approve this PR, please let @bobbai00 know so that he can review it.

[kunwp1]

I left a few comments. Some of them may be wrong. Please check.

[kunwp1]

I left a few more comments! @bobbai00 Please review the PR after @seongjinyoon resolves the comments.

[seongjinyoon]

I have addressed all comments. @bobbai00 please take a look.

[bobbai00]

Left some comments on the frontend code.

[seongjinyoon]

@bobbai00 Please review the code.

[bobbai00]

Left some comments

[seongjinyoon]

@bobbai00 Please review the code.

[bobbai00]

Its in good shape now. Left few minor comments. Please let me know once you resolved them, and I will take another look

[chenlica]

I removed myself from the reviewer list. We rely on other members to do the reviews. Feel free to merge the PR after all reviewers approved it.

[bobbai00]

LGTM!