refactor(config): consolidate tsconfig path aliases and remove redundancy

- Move declaration/declarationMap: false to root (was duplicated in both
  child configs)
- Remove duplicate baseUrl/paths from tsconfig.web.json (now inherited
  from root)
- tsconfig.web.json and tsconfig.server.json now only declare their own
  unique options (jsx and types respectively)

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

tsconfig.server.json

@@ -1,9 +1,7 @@
 {
   "extends": "./tsconfig.json",
   "compilerOptions": {
-    "types": ["@cloudflare/workers-types"],
-    "declaration": false,
-    "declarationMap": false
+    "types": ["@cloudflare/workers-types"]
   },
   "include": ["server", "shared", "workers"],
   "exclude": ["server/**/*.cf-test.ts", "workers/**/*.cf-test.ts", "server/test/apply-migrations.ts"]