Threat model review 2025 Q3

[grigasp]

https://github.com/iTwin/presentation-rules-editor/blob/master/CONTRIBUTING.md#threat-model

[grigasp]

• Fix VeraCode issues: Remove unnecessary console.error call #194
• Fix npm audit issues: Bump vite to 6.3.0 #195
• Update threat model schema: Update threat model to latest schema #196

@GytisCepk, did I miss anything?

[saskliutas]

Bumped all dependencies to latest versions. #204
Added missing CSP header: #201
Made sure all scans pass (Mend, VeraCode, pnpm audit)

[GytisCepk]

Q3 security audit for Presentation Rules Editor is complete.

cc: @paulius-valiunas @wgoehrig