chore: update upstreams

[github-actions]

Automated update of upstream metadata, generated TypeScript next-tag sources, and Nix inputs.

Version updates

• TypeScript next: typescript@next 7.1.0-dev.20260827.1 -> 7.1.0-dev.20260830.1

TypeScript compiler

• Previous commit: e95d8e57a89f4c174604d76e683d1f14d148373d
• Updated commit: 9a8581c393a38961489cc8409ae4dfbe97fc25ec
• Compare: microsoft/TypeScript@e95d8e5...9a8581c

Upstream commits

• 065f7ac [api] Add .isReadonlySymbol() method (#63943)
• f5762f0 Delete pr_owners.txt (#64045)
• b3946f2 Delete defunct GHA workflows (#64048)
• 0cfafa9 [api] Add .getNonMissingTypeOfSymbol() method (#63956)
• 547fe42 Fix accessing name on jsdoc link for invalid names (#64032)
• 8330d40 Additional generator-based sync API methods (#64023)
• e26b8d2 Content mapper auto import formatting panic (#64042)
• 8d8bdf9 Make tsconfig move lifetime test deterministic (#64081)
• 28a4d6c Validate DocumentIdentifier arguments in API (#64079)
• 3afef7b Complete the CompilerOptions API surface (#64078)
• 54d81cf Add createProgram to API (#63950)
• 444de10 [api] Fix crash accessing tuple type reference data (#64080)
• a6fab63 Fix scanning issues related to Unicode escapes in RegExp group names and refactor identifier scanning (#63996)
• 61691a5 Fix SymbolFlags.All value by parsing operator precedence when generating TS enums from Go enums (#64083)
• 9a8581c Verify go test works without node installed (#64082)