update BranchTagSelector and RiskScannerDialog to use branchOrTagSlug

[refoo0]

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[Copilot]

Pull request overview

This PR updates the BranchTagSelector and RiskScannerDialog components to properly distinguish between branch/tag names and their URL-safe slugs. The changes ensure that URLs are constructed using slugs while display names are used for API headers and user-facing elements.

Key changes:

• Added branchOrTagSlug parameter alongside branchOrTagName throughout the upload flow
• Updated router navigation to use slugs instead of names for URL construction
• Improved error handling flow in upload functions (SARIF and VEX now navigate after success)

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 3 comments.

File	Description
ManualIntegrationSlide.tsx	Adds branchOrTagSlug state variable and ensures it's synchronized with branchOrTagName across all input handlers and callbacks
RiskScannerDialog.tsx	Updates upload functions to accept branchOrTagSlug parameter and uses it for router navigation; refactors success flow for SARIF and VEX uploads
BranchTagSelector.tsx	Adds optional versionObj parameter to pushAssetRef and improves safety with null checks before callback invocation

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