Upgrade TypeScript to 7.0.2 (native Go compiler)

TypeScript 7 ships as a native Go binary and drastically trims the
package's public JS API surface (no more `main`, and `exports['.']`
now only resolves to lib/version.cjs) since the programmatic compiler
API isn't stable again until 7.1. This broke apps/resolver's tsdown
build, which used rolldown-plugin-dts' tsc-program mode (import ts
from 'typescript'; ts.createProgram(...)) for declaration generation.

Fix by switching that build to isolatedDeclarations, which lets
rolldown-plugin-dts generate .d.ts via its oxc-based path instead of
the TS compiler API entirely. That surfaced two isolatedDeclarations
violations in ontime-types (array/Object.keys initializers lacking
explicit annotations), fixed with explicit `string[]` types matching
their existing inferred type. Also bumped tsdown to pick up its latest
rolldown-plugin-dts, and disabled allowJs in tsconfig.dts.json since
it's incompatible with isolatedDeclarations.

Full workspace typecheck, lint, build, and test suite (1186 tests)
pass under TypeScript 7.0.2.

apps/resolver/package.json

@@ -20,7 +20,7 @@
   "license": "AGPL-3.0-only",
   "devDependencies": {
     "ontime-types": "workspace:^4.2.1",
-    "tsdown": "^0.21.5",
+    "tsdown": "^0.22.4",
     "typescript": "catalog:"
   },
   "files": [

apps/resolver/tsconfig.dts.json

@@ -1,6 +1,8 @@
 {
   "extends": "./tsconfig.json",
   "compilerOptions": {
-    "ignoreDeprecations": "6.0"
+    "ignoreDeprecations": "6.0",
+    "isolatedDeclarations": true,
+    "allowJs": false
   }
 }